Start at the best place possible :D the beginning. As grg has already said, learn your basics :D Here is a link to another post on this website:
This is about wicca, and the beliefs. It's by Lark and is a very helpful guide to decide if this religion is for you or not :D
Now onto your magick basics. They vary from tradition to tradition but the common ones always seem to be:
~ and grounding.
Here is a post by Zebrah on the basics.
This will be a very nice guide to the basics :D
Good luck :D