Dropbox hotkeys are pretty much self explanatory and mostly similar with your operating system’s regular shortcut keys. Therefore it should be quite easy to master them. If you’re on a Mac machine just replace control key with command key and you’re good to go.
Up Arrow Select previous file (hold Shift to select range)
Down Arrow Select next file (hold Shift to select range)
ctrl + a Select all files
esc Deselect all files (and hide these instructions)
Left Arrow Up a folder
/ Search
Right Arrow Open folder
enter Download or open file
ctrl + c Copy selected file(s)
ctrl + v Paste selected file(s) into the current folder
F2 Rename selected file
Delete Delete selected file(s)
ctrl + z Undo recent move/copy/rename/delete
? Show these keyboard shortcuts