I am a sales rep for a small business company that requires me to go visit engineers/end users and educate them on my product line for use. There is a lot of referencing back to pdf's that I would like to easily maintain and place on the ipad for myself as well as going over details. It needs to be able to sync up from possibly a folder on my desktop or a cloud area...and then able to auto update or refresh on the ipad. What is a good app that can help me keep a pdf catalogue organized and easily accessible? Storing video files and .ppt would be nice, but not a necessity. I also like to mark up notes/drawings...maybe with the Apple Pencil Laptop: Windows 10, O365 Business Premium, Adobe Acrobat DC Subscription Apple Airpad Gen 3.