How do I multitask (switch back and forth) between Apps?
This seems more difficult than it really is. Typically, once an apps loads, it continues to run in the background until manually closed or until the unit is turned off.
If you want to now use a different app, all one would need to do is tap Home, then tap the shortcut for that app. Once that app is open, to switch back to the first app, you tap Home, then tap the shortcut for that first app. It should pick you up where you last left off.
Another way to easily switch between apps (only in the T103/4/5 model) is to press and hold the Home icon. This will show all recent apps, to which you may choose to switch.
Some apps will place alerts in the Notification Panel allowing you to switch apps more easily, but this is not universal.