Yes, here is the list of these combinations:
HK + Up/Down: select slotHK + X/Y: load/save stateHK + Left: toggle slow modeHK + Right: toggle fast modeHK + R1: cycle in ratio (4:3, 16:9, fullscreen stretch)HK + L1: screenshotSelect + Start: quit PCSX2.Yes, you need to do the following:
Config > Graphics settingsOSD > Enable monitor and click on OKYes, this is entirely possible, but you will need a keyboard and mouse:
Alt + Tab key combination to select PCSX2 X.X.X-X (git).CDVD > No disc.Reset.System Configuration and at the bottom you will see Language.HK + Start and restart your game.