Syncing Questions.

[Grimreaper]

I'm getting an ipod touch, ( I know this is an iphone forum, but I figured it would be the same) And I have a question or two about syncing. I like to add all of music from my brother's laptop. He only comes home about once every 2 weeks though. Since I'm pretty sure you are required to sync it to a computer when you first get it, am I going to be able to sync it to my computer at home when I first get it, And then still use his computer to add music to it? Do even need to sync it to add music? Can I just drag and drop the music? Since I've never had one before, syncing IS required when first turning it on, correct? I'm just wondering, Because I don't want to screw anything up.