It's right there in the 2nd line of the display, but just a little bit cryptic:
Code:
Actions Undo Package Resolver Search Options Views Help
C-T: Menu ?: Help q: Quit u: Update g: Download/Install/Remove Pkgs
The "C-T" in "C-T: Menu" means "Ctrl-T"
Your 2nd Q seems incomplete, care to rephrase?