If you haven't looked already, I would suggest you to scroll down to the bottom righthand part of this page and look under the "Help" section, where you'll find the FAQs, Tips, and Newbie area. I would make sure to read through all of that.
If you're absolutely new, I would start by reading through some of the stickied forum posts- as they tend to be very informative. If you have questions, there are plenty of people around the site who would be willing to help. Get an idea of what you are wanting to learn in particular, and use the search engine to look up articles and forums around the site related to what you are wanting to learn.
Many people suggest you build a foundational understanding of magick before jumping into it. Some people refer newbies to "the basics" which is a list of different practices, techniques, etc, to help people get started. I'll provide you some links below that are worth checking into.
Links (be sure to remove any spaces that may pop up):
Starting out: http://www.spellsofmagic.com/read_post.html?post=71692