Dropbox is the best app for transfering content to/from laptop and iPad.
Community Review for Dropbox
My Take
Dropbox is an excellent solution for transferring documents from digital devices to a laptop. The interface is simplistic visually, which makes tech-resistant individuals more willing to use the tool. The process of creating an account may be a bit cumbersome, requiring the individual to activate their account through an emailed link, but once set up, the Dropbox account is very easy to use. It was a little frustrating to have a minimum storage space, but I did like the options Dropbox provided to earn additional space.
How I Use It
I use Dropbox as a storage space to share PDFs with students on the iPads. Students access Dropbox and click on the file which could be instructions for a task or a printed storybook. I also use Dropbox to transfer images and videos off the iPad to the laptop for student created projects.