Is there a chance we could get a either a tutorial on the controls or maybe a convenient popup with them available? that's a lot for a person to try and remember the first time. Or maybe like have the action with the key next to it?  (ie Dig[B])

That would be great, I agree! 

Until then, you can see all the keys in the main menu and most buttons show you the shortcut (if there is one) if you hover them.