Like previously stated, you must understand the basics of Magick before just jumping in and casting any spell you want or it won't work (or turn out extremely bad). With that being said, read as many articles as you can about the basics, seek a teacher, and I suggest reading as much as you can elsewhere about the Craft. There's some links at the bottom of my profile to some books that are wonderful for beginners. I'm not gonna preach ethics to you. You'll figure it out on your own. It's best that way.