I can't really tell you where to start because I asked the same question myself. There's a lot of helpful people on this site that will give you great advice & suggestions & you should take them!
But I would suggest you follow your instincts after you've done the basics: meditation, relaxation, learn all you can about Wicca. You will find out that there are so many wonderful things you want to do but it's just too many.
So as I said, follow your instincts & what ever feels right do it, it may be you'll be attracted to the elements, tarot cards, spiritism, herbalism or what ever calls to you.
Trust me, you'll know!