Wow, thanks for the reply Bacon!

May I ask something? What do you mean by "Block things out"?
I am serious about drawing, but I don't think I can do realism. But I'll try it.

And thank you for the tablet suggestion! :3
Are there any function differences (better precision etc) in the larger ones, or is it just there are more buttons/short keys? I would like to get one that is the closest to a pencil-paper feel. xD