AHA!!

Honestly the biggest problem I was having for a long time was deleting a tab on the calculator. I just didn't know how to do it. After about two weeks, we had figured out that it was just pressing ctrl and then up on the directional pad, and it brings up a photographic list of all the tabs you have open and running. All you do then is clear or delete the unwanted ones. I seriously went ahhhh, because it had been something so simple but I just could not figure it out. Hopefully I have many more "aha" moments in that I can master the technology as a whole.