I don't have a nook but played with one in the store.

According to the User Guide (page 93 of the pdf) there should be a "go to" menu available when you're reading a book.
Quote:
Navigating
You can go to these locations in an eBook using the menus:
• Cover
• Table of Contents (if present)
• Chapters
• Pages
• Furthest read page
• Bookmarks
• Highlights and notes
To go to a specific location in what you are reading:
Tap Go to and choose one of the destinations.
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I have no idea about your second question. Hopefully some of your fellow nookies will jump in with the answers.