An iPad may be superb for watching TV shows, movies, to listen music, playing games, reading PDF and e-books. But transferring documents and other data between iPad to computer, here something left to be desired. Apple does not permit the transfer files to other devices directly, due to some privacy rules. To send files through emails to your iPad is a good option. And doing so is time consuming.
Another option to transfer files from iPad to iPad is possible by using iTunes. But complete data transfer is not done with iTunes; it only synchronizes files on the iPad to computer.