Taking my blog to the next step

Ok..I wanna take my blog up a step. I am currently trying to find some good information on 3 column layouts, that I can modify with my own decorating(which is a whole other issue).

My first thought is maybe getting my own address. Has anyone done this? How hard is it to get everything moved over? I think I saw that blogger has redirect...I gotta check into it. What else is important to know before I do it???

Thanks!