Bindings follow Ariel's ranger rc.conf (stock vim-style). Everything also works by mouse: click selects, double-click (or tap a selected entry) opens, the strip at the bottom runs keys.
ranger's destructive keys are wired up, politely: dD Delete dd dt pp cw a A ar zh E du Q ZZ ZQ
there's a (fake) shell too: S @ # or :! then ls cat README.md git log neofetch htop make mail ari rm -rf / sudo vim fortune … :!help lists them all.