Q: How do I set up Dropbox on a Windows Computer or a Mac?
A: The easiest way is to save a deck or collection to Dropbox on a mobile device first, as it'll create a folder in Dropbox for you to save to and load from. Saving or loading outside this folder will cause your other devices to be unable to find these files. If you're already set up on a mobile device, you can just find this folder (...Apps/DeckedBuilder/) and save and load files from it like you would from any other folder on your computer or Mac.