Why must these field manuals be a stationary, floating book in some zones? Yet not a permanent option selected in the characters main menu? This way, you can access this field manual in any location, which opens up the possibility of adding not just some zones, but all for individual training.

It also eliminates the need to needlessly travel to a set location each and everytime you complete a training page. This benefits not only the solo traveling adventurer, but a party as well when focusing on a camp.

It is a book afterall, let's not leave it in the open weather, and have us adventurers carry them to prevent wear and tear.