not dumb, just novice-like. (I was at that stage, this time last year).
Just search on youtube for ADW Launcher or Launcher pro.
Basically, the lock screen stays the same but the ENTIRE homescreens are different. Launchers allow for MORE customizability. For example on your GSII, where the 4 icons are at the bottom -a launcher called Launcher Pro will allow you to have a mini scrollable dock that can display up to 12 applications (4 on each scroll)
Launcher Pro also allows you to have a 3D app drawer amongst many other things.
Scrolling animations can also be changed. To be honest, just download Launcher Pro and run it. IT's so simple and it can't damage your phone in any way because the phone sees it as an "app" so you won't be messing around with any settings. If you don't like it, you can just uninstall it.