if you want to get serious you should look into illustrator, definitely photoshop, and possibly indesign. the fre way has already been mentioned, but you can also look into educational discount, and sometime you can get it for free from your school (usually highschool), though often it is an education version that has some features removed if this is the case (my school had FCP 6, but it was the education version, I'm not sure if adobe does this)