I use an app called QuickOffice. It allows wireless uploads and you have access to MS Office files while off-line. It takes awhile to load and view large PDF files, but I have not found an app that does bookmarking on PDFs. It's a $20 app but I have found it worth it. I then downloaded a program called PDFSAM (pdfsam.org) which allows you to split large PDF files into smaller files which will load faster and is easier to scroll through. This program is free. I made a folder in QuickOffice for the FOM and then made sub-folders for each individual chapter. A little work to start, but it makes it great once done.