[Snowmister]

Update: I was able to mostly fix these problems eventually.

Fix for Issue #1: I created a folder called "NOOK" and brought PDFs into there. They then automatically appeared on the device.

Fix for Issue #2: Factory reset.

Fix for Issue #3: I created a folder in the micro SD card called "NOOK" and brought items in there. When I plugged the SD card into the tablet, they automatically appeared in the library. I didn't need to go into storage management.

Fix for Issue #4: Factory reset. (I assume a network reset would also have worked).

I hope this helps anyone else who encounters similar issues!