If you just came from the Windows (or non-Mac/BeOS) world and are confused about having to re-learn all those ’standard‘ keystrokes… I can’t help you.
BUT — you can turn the liability into an asset by also learning the Dvorak keyboard! The Dvorak keymap is built right-into BeOS — just select it in the Keymap preferences panel (or buy a dedicated Dvorak keyboard). Your fingers will thank you.
For more information, start at Yahoo!’s Dvorak Keyboard Resources.