By pressing the R-key your character will unsheathe his weapon and it's ready for combat

F-Key, the USE key: The F-key is the default 'use' key. If you need Runescape Gold to talk to a non-player character you run up to him and press the F-key. The F-key is very versatile; it's the key you use to interact with a bank, to get on a mount, to loot a corpse etc.

G-Key, the other USE key: The G-key is the 'alternate use' key. Some interactive objects have more than one uses. The G-key will open up a menu with more options than the default use ones. An example of this is when you use the G-key on a mount, it will allow you to unsummon it and make it go back to being a figurine in your backpack.

The G-key also opens your clan vault when interacting with a bank, its how you trade with a player, or how you invite someone to your party, and has many more uses.

The R-key sheath/unsheathe: The R-key is the sheath and unsheathe key. If you have a weapon or a magic staff equipped, they are considered sheathed. By pressing the R-key your character will unsheathe his weapon and it's ready for combat.

Space-Key Jump: Using the space key you make your character jump, jumping uses up stamina so you want to be careful not to run out.

Swimming Controls:

W, A, S, D Forward, left, backwards, right

C Dive

Left shift and movement key crawl-stroke swimming (faster Space Swim Upwards)