Now don't quote me on this, but I thought d2k said if you press and hold the volume down key you got a menu list of the last few widgets you had installed on the RockTab and from there you can add the widget(s) to the desktop.
At the very least,let me give you a few pointers
The widget tab has an infinatly better calendar app than the one you see when you turn it on,switch the two out as soon as you can.Also,get an app called"Backrounds" in the Marketplace,it allows you to set/download/save nearly 1000 wallpapers to your Rocktab...and most of them ROCK!! Also try the apps I already put on the first post,they work without slowing down the Rocktab too much.Keep the apps simple and you will have a great time with this
If you havent figured it out yet,you can click and hold an icon on the desktop and drag it to the trash can that appears on the bottom to clean up your desktop,and also to add apps from the pull up tab easily,just do the same thing,click and hold an icon and drag it to the desktop,makes setting it up alot faster
One more app: Quick Battery,its got alot of options(and after download youll find it in the widgets tab),dont forget to play around with its settings a bit,it really works great