
Fabulous questions! I'm glad you asked.
Let's start at the beginning - the why - and work our way down to the details - the how.
It is an expression of your heart's longing and your soul's potential.
It is also a focal point for your devotion . . . A spiritual practice arena for devotion to the Divine.
But it's not easy to access something so abstract.
So, like your symbols and tools and Gods and Goddesses, you create something that comes through the gate of your senses. Something you can see and smell and touch. Even hear and taste, if possible.
The more senses you engage, and the more you balance your sense perceptions, the more you can access the spiritual levels that you seek.
In this context, altars are not some esoteric mystery, but the most natural expression of what has value to you.
Almost everyone has one . . . That collection of photographs on the bedside table. The mementoes that gather on the mantle place. These are altars to your loves and your life.
When you want to make an altar dedicated to your spiritual life, you simply focus a little more. You put only items that uplift your spirit and remind you of your ideals.
That's all any spiritual altar is - Wiccan or otherwise . . .
Go for it! How could you possibly go wrong, bringing the blessings of the Divine wherever you are. Your office, your car, your bedroom, . . . all are perfect places for an altar.
. . . Because every altar becomes a home for what you enshrine there. When you create an altar to the Divine, She lives there.
(So behave accordingly!)
Put it in a personal part of your house, or somewhere you can discretely close a door and keep it from sight.
This can be your innermost Temple's altar . . . the Heart of your witchy heart. This is where you can put your most personal and meaningful items.
When something is very sacred, it's not easy to talk about it. The words don't exist, for one thing. Even more, the respect for Soul and Spirit isn't common in our culture.
So to expose your innermost Temple to idle curiosity, disdain, or ill intent is to open your Heart to violation and disperse the Power gathered by your altar.
Only those to whom you could safely entrust your most tender feelings should see this . . . if anyone. Even then, think about it carefully. There is no reason why you should share this altar at all.
Your spiritual life is between you and the Divine. Your Wicca altar is the outward manifestation of this relationship. It can be kept completely confidential.
Sometimes the most sacred things need to be kept silent about.
Your relationship with the Divine is the deepest of relationships. Just as you are unlikely to let people watch while you and your beloved are making love (or so I assume ), keep your most personal altar truly sacred.
All your other altars can be as open as you (and they) like.
You don't even need a specially designed altar table. Many people set up altars in convenient places, like an end table, a dresser, a mantle, even on top of the tv! For a private altar, a hutch with closing doors, or a bedside table can work well.
And don't forget your outdoor spaces - perfect for Wicca altars!
It's very forgiving, as spiritual practices go. Which makes it perfect for those of us who are not yet particularly disciplined.
Your daily life will reflect what's happening on your altar. In other words, when you make changes on your altar, you will alter your life.
If you feel stuck at work, for instance, alter things in the spiritual realm. Clean your altar thoroughly. Put on a fresh altar cloth in a bright color. Decorate it with some new Wiccan stuff. And then watch your life transform.
This magickal benefit creates motivation to keep your altar devotion up.
It's your altar. And it's your spiritual Path. There are no rules for what kind of Wiccan stuff you put there, except the Silver Rule - do what works for you.
Be creative. When making a Wicca altar, let your heart speak. Let your inner magickal child express the wonder and delight in the world that you once had.
This is your pure divine self expressing itself.
And that's what spiritual practice is all about.
Altar Tools
(It is pronounced AH-tha-may or ah-THAW-may.)
Traditionally black-handled, the athame lives in the East, the direction that represents mind, thought, and choice. 
An athame doesn't have to be metal. You can find ones made out of wood or carved stone, if you prefer. It's not used as a physical knife, anyway, but a symbolic one.
Athames hold yang [god] energy.
Athames are used to direct energy, typically in casting ritual Circles and recalling them. They may also be used to cut energetic ties.
Ordinarily, an athame is not used to cut anything on the physical plane.
A bell with a lovely tone will call beautiful, healing energy to you. Bells can also be used to clear energy. At the end of a ritual is a good time for this, but if unwanted energy crops up during a ritual, you can use the bell to disperse it.
Candles are used to invoke and hold the Powers of each direction.
Other options are having just one large candle for the Great Goddess, or three - white, red, and black - for the Maiden, Mother, and Crone.
Where they go is up to you. Somewhere they won't drip onto delicate items or catch things on fire is always good. ![]()
These candles invoke the Energies of the Divine.
As such, it is a "yin" altar tool.
Some people like very fancy bejeweled cups for their altar chalice, but this is not necessary. A cup or wine-type glass of any material will do, or even a bowl. Something that holds water and, ideally, is round or curvy is good. 
Silver is always nice for Goddess tools - a silver chalice is a perfect Wiccan chalice.
The altar chalice is placed in the West, the direction of Water and the yinnest of the yin.
The Wiccan chalice is used for ceremonial drink, offering libations to the Divine, or holding the salt-water solution.
They are more than reminders of Divinity. Statues of the gods and goddesses can actually hold the vibrations of the Divine.
So your altar becomes a living temple - a place where the Divine dwells.
You can also use your altar chalice or cauldron for this purpose.
Later, pour or bury the offerings in the Earth, or into living water (rivers, lakes, etc) to carry them to the Divine.
When you would honour the Divine with a gift of thanks or prayer, you can bring them to the Altar as an offering.
Often flowers are kept on the altar as an offering. Anything that is beautiful or special to you, or symbolic of the purpose for the offering, can be offered.
It is probably not necessary to point out that offerings should not be anything that could harm anything (but just in case, I'll point it out anyway).
For one thing, since the Divine lives in all things, anything you harm is an injury to the Divine. And pragmatically, you'll be giving the offerings to the Earth later.
Offerings are one of the most overlooked practices in Wicca today, yet one of increasing spiritual power and importance.
The Pentacle, a 5-point star within a circle, usually is placed in the centre of the altar. The pentacle is one of the most important altar tools, offering protection and power in magickal work.
Water and salt are both purifying agents, not only in the physical realm but the energetic as well. Salt water also represents the energies of earth and water united, the ocean womb which gave birth to all life on the planet. So while this may seem an insignificant addition to your altar tools, it holds great power.
Some representation of air, commonly something scented like incense, essential oils, or smudges, or else a flying bird's feather goes in the East, to represent Air.
Sacred scents are used to cleanse an area energetically, call in certain powers, or help witches shift consciousness.
Feathers can also be used to cleanse energy fields, and to fan incense or smudge smoke.
For the Earth element, in the North, stones and sometimes crystals are used.
These bring in Earth energy, which helps with grounding (except perhaps for quartz crystals). Gem stones also carry certain energies which can be invoked by having them on your altar.
(Another option is to have elements of nature such as plants or animals represent Earth.)
The wand is like a portable, handy version of a broom. There is a theory that originally one instrument performed all the purposes served by the two today.
A wand can be made of any natural material. Wood is traditional. Since all woods have unique Powers, you may like to choose the wood to suit your particular needs.
Wands can be used for divination and channeling magickal energy. They can be used to cast and recall circles, in place of the athame.
The magickal wand goes in the South, for the power of will, magick, and transformation. It also represents yang, or god, energy.
A broom is not necessarily classified among altar tools, but it is indispensable for energetically cleansing sacred space.
While handy to keep nearby, brooms are usually too unwieldy to put atop an altar.
Traditionally cast iron, a cauldron is like a 3-legged rounded cooking pot. You can get them in sizes from huge to tiny.
Cauldrons are handy items for burning things, like incense and herbs. This is one of the reasons it is one of the most common altar tools.
Put an incense charcoal in the bottom, and sprinkle the herbs and powders onto it for very pagan incense.
(Caution is required when burning anything, of course. Cast iron on legs, if made properly, will keep the heat from the surface it's standing on, but check to make sure. Also be aware of anything flammable nearby or above the cauldron - particularly sleeves and hair!)
Cauldrons can also be used to hold "witches' brews," that is, magickal spells in liquid form. These range from simple salt-water purifications to complex spells.
This knife usually distinct from the Athame, which is a symbolic knife only and not used for other purposes by most witches.
Not all witches count the working knife as one of their altar tools, but just a functional implement.
Often awkward around an altar, swords may be kept near or under it to be held in the magickal aura.
In the past, swords were the athame of the nobility, but this custom is obviously ridiculous from a spiritual standpoint. Blue blood does not equal spiritual nobility!
Unlike knives, however, swords have no practical use other than as weapons. This link with violence makes swords unadvisable as altar tools for most people.
An altar cloth is optional, but useful. By choosing one color or design, you set the stage for the energy of your altar.
It's also handing on a pragmatic level. It keeps dripping wax from marring your altar top. And since dripping candles are a hazard common to all witches, you may want to choose a cloth that isn't too hard to remove wax from. Or so expensive you'll cry if it gets ruined.
This could be spells, new altar tools, crystals, deities, or symbols of something you would like to have more of in your life . . . whatever would benefit from being infused with spiritual power.
If you have a Book of Shadows it should be kept on your altar, preferably. It is one of your most important altar tools. If your altar is not private enough, or you can't keep it there for another reason, then keeping it under your altar is best.
If you have other books that you use for reference for spells or rituals, it may be handy to keep nearby. It's better to remain within the cast circle than to leave it to look up something.
And now, having said all about this-goes-here and that-does-that, I would like to reiterate that you can have a powerful and lovely altar without following any rule but one:
Make it to please yourself, and you will please the gods as well.
And we always want them to be on our side!
And so, a caveat. . .
So listen to your heart; it's the seat of your Power. If something else would be a better symbol for you than what's listed here, it is probably wise for you to use it.
Many witches use items that are especially important to them as their "athames." Starhawk, the writer, apparently uses a pen to cast her circles. A composer friend of mine uses a baton. Others I've seen use feathers, sticks, and crystals. Find what focuses the energy for you.
After all, the gods and goddesses speak to each of us in our own unique language. As in every aspect of Wicca Spirituality, it is what makes your heart sing that is the right thing for you.
But if you're unsure of what to use, the altar tools listed below are good starting points. Once you've used them for a while, you'll begin to sense what tool works well for you.
Pictures of Altars




Assignment
QUESTIONS:
1. What is an Athame and its use?
2. What is a Wand used for?
3. What is the use of a Broom?
4. What is the use of a Chalice?
5. What is the use of the Pentacle?
6. What is the use of a Bolline?
7. What is the use of an incense burner?
8 What is the use of a Cauldron?
9. Where can you find Magickal items?