I personally have an ipod 5.5g (video) so I decided to write some tips on reading books on it.
For reading books it is worth using the minimum brightness, so the eyes will be much less tired.
It’s impossible to completely merge the book file onto ipod, there is a restriction on each file (4kb like). So you will need to split the book file. Further on the iPod add- on- > Notes. There should already be a directory with files. The only negative I noticed is that you can not save the position when leaving the notes, so you have to remember where you left off. ')
Enjoy reading!