I got my Galaxy Tab a few months after getting my Kobo Vox and found the Vox forums very informative as to the widgets and menus/settings in Android. I had had an iPod Touch and a Blackberry and didn't know a thing about Android.
Just from reading the Vox forums, by the time I got the Tab, I was pretty familiar with how Android works and now I have an Android phone as well. I can share my apps on all 3 devices (most of them except DroidTV which has a minimal subscription per device). Google integration is fantastic and easy to use and the way notifications are done is great! You'll love it, won't take long...
Unless otherwise stated, my edits are to correct the auto-correct...