Russian hotkey manual: rmc.pdf
Other links
Some usefull settings ~/.mc/ini
1. Color
gray style of mcbase_color=normal=gray,lightgray:directory=black,lightgray:executable=lightgreen, lightgray:editnormal=gray,lightgray
base_color=normal=gray,lightgray:directory=black,lightgray:executable=lightgreen, lightgray:editnormal=gray,lightgray