Days of the week are also useful to know. There are supposedly days that magick and colors are more powerful. If you believe in this, then it will work. But if you do not, it will not make any difference. Herbs in candle magick are also very important to know.
Herbs have such a natural power, and they can transform a simple spell into a very powerful one.
I do recommend that you further your reading on this subject. To do this, you would cleanse it as you would any tool that you would use in ritual or magick. First I would light a candle and incense. Pass the candle though the candle burning and then the incense. Dressing Candles Dressing the candle with oil is as important as any other step.