there is no such thing as save
everytime everysecond your ragnarok is saved
whenever u walk whenever you do something it is always automatically saved.

and to quit
just simply press ESC from your keyboard
and there will be few choices
1st is character select, it is making you to go to your character page

2nd is Exit window
it makes your ragnarok completly exit

No need worrying where to save..it saves it self every time you log out
or do you mean when you die you return to that specific place?
if so you can save your respawn point at the kafras
maid like npc's

To quit the game from your PC, simply push the ESC button and choose "Exit to Windows". There is no "Save" option in Ragnarok Online because the game saves itself automatically every second :P