The nook STG runs Android. You cannot install some version Linux. It's not a full computer. You can read books from the sources you mentioned. But if any of the books you want to read are PDF, forget it. It's lousy for PDF. Forget the word processor, Notepad++, C++, or any other app you want to run like that. The nook will handle ePub eBooks.
Your best bet is a laptop running Windows 10 given what you want to do.
|