What candle should I use?
Well, any, but the smaller, the better, especially for spells that require that you wait until the candle burns out on it's own. I have three small candles made specifically for candle magic that I use, but, as I said before, you can use whatever you want. HOWEVER, try not to use a candle over. If you do, it may yield unwanted outcomes.
The colors on a candle do mean things, as you may know.
Red stands for courage, health, and love.
Pink is friendship or sweet love.
Orange is attraction. It also stands for encouragement.
Gold is for financial gain, solar endeavors, and success at business.
Yellow is persuasion and protection.
Green is financial gain, abundance and fertility.
Light blue is health, understanding, and patience.
Dark blue stands for vulnerability and depression.
Purple is power. It's also the color of ambition.
Brown is related to the Earth and animals.
Silver is reflection, intuition, and lunar connections.
Black is the color of negativity and banishment.
White is purity and truth, but in most Pagan traditions, it can be used in place of any color.
After you have selected the candle, oil or dress it. This will help you and the candle establish a psychic link between one another. You will need natural oils for this. Begin at the top and rub the oil down to the middle, then start at the base and rub it up towards the middle where you left off.
The most basic candle magic uses colored paper to match your candle and intent. Write your intent on it, fold it while concentrating on your intent. You can say a small incantation while doing this. It doesn't have to be fancy, but it can be. Then you burn the paper and hold on as long as possible. When you can't anymore, you drop it into a cauldron or FIRESAFE container. Allow the candle to burn out completely, then dispose of the candle in any manner you see fit.
About.com was a great help in making this, so thanks are due there!