THE BEST useful link and you are about to discover it! Imagine ALL Pro Tools shortcuts collected in a simple online library with search function and even a keyboard view with highlighted shortcut buttons.
Enter www.protoolskeyboardshortcuts.com, chose your Pro Tools version and browse through all the shortcuts, Pro Tools has to offer. The shortcuts are sorted in various categories and direct search enables looking for particular commands and short you might not even know yet.
A pretty handy tool for every Pro Tools user. I think, I might get over this list and get a shortcuts update for myself.