enkei you gotta use WASD for movement, C or any key bellow WASD keys next to spacebar for crouch, and then mouse for aiming and shooting.
What you do is, you aim and shoot with a walking weapon (preferably deagle) and rapidly after shooting you let go of aim and press the crouch button. Now there's various techniques, but for starters try cbugging then running to another position repeatedly and cbugging again. You can also rapid fire, which is cbugging very quickly in one clip and without stopping, but it's not properly synced in 0.3 and quite hard to do when you're still having trouble learning the basics.
Try mixing it up, cbugging and running left or right. You can even practise this on singleplayer or alone on any server just to get the hang of it. I use /fpslimit 48 since the default is kinda slow for me. But whatever suits you really.
If you look for ww clan training servers you're bound to find someone willing to help you learn how it's done.
Oh and also, if you're up against someone rly skilled in rw, your chances of succeeding with walking weapons are slim, with or without cbug.
Hope this helped.