Chord pro songbook

Hi
Does anyone know how, if you can transfer the songs from your ch
oride songbook across to Dropbox or the chord pro songbook app for iPads . I go into iTunes on the iPad but it don't seem to have the full options to select your iPad device, and transfer. Is it another example of all this supercool technology that still makes you find a complex DIY route to the obvious things I (we) want to do? Any advice welcome. Thank yo , ad.