Books would be best and hopefully you can get your hands on some Raymond Buckland and Scott Cunningham are great, but there are many others. Look through the pinned forums in this section, Lark has made a few lists of books one should read.
A word to the wise, don't look at spells first, leave that for later. While Wiccans cast spells, it shouldn't be the primary reason to convert. Try studying, having Esbat [full moon] and Sabbat [holidays] circles to get a feel for the religion and connect with the deities, then try spellwork. Good luck to you, blessed be.