New in iOS 4, you can also make folders! Whenever you want to group several Apps together, just drag one on top of another. This will generate a folder and auto-populate a name based on the type of Apps grouped. You can change this name if you like. To add other Apps, just repeat the process of dragging new Apps onto the folder button. Whenever you like, you can rearrange the Apps with your finger in "shake mode."
These three tips, creating buttons, organizing them on panes, and creating folders, will serve you well in accessing your iPhone's iPod Touch's features as quickly as you need to. Good luck and enjoy the mulit-touch goodness!