The best place to start is with your basics. These include:
*Belief in yourself and your abilities
*Circle Casting and Releasing
*Correspondences (colors, days, lunar phases, etc)
Information on which can be found in Newbie Central, Tips, and Faqs. All of which can be found by going to the Home tab. If you go the the General Info section in the forums there is a thread titled "Starting Out" which you might also find useful.