Candles are just a prop and anything can be done with or without candles. I like to use candles for rituals and such, and you can find which colors correspond with what on the site. sooo..
read all of JoyofSatan in its entirety. the Powers of the mind are what matter. Magick is but three things, raising energy, programming energy, and sending energy.
Candles can all be used in meditation such as flame meditation.
be careful with candles never let them go unattended. From experience one somehow almost caught my house on fire right after I dedicated thank the Gods I was alerted by my Guardian Demon and swiftly got the fire put out.