I also found it helpful when I discovered that one can Alt-Tab-release-Tab and keep Alt held and then navigate the tabbale-to windows with the arrow keys, including hitting Del to nuke one.

Oh, and Win-Down for minimise since Alt-Tab away from an RDP session doesn't do what I want.

(Win+<digit> is still the best, along with Ctrl+<digit> for browser tabs, but given you already covered that one I figured I'd share my next favourites)