If you want, I can give you a demo of the first room. But I'm guessing that more people will help you for this room on the Hints and Solutions board, which I see you haven't even tried.
How the game works is this:
Whenever you walk between a pair of yellow way points, you get a number of moves in your alternate form equal to your maximum moves. Your maximum moves increases by 50 every so often, when you beat rooms. Whenever you walk through a pair of differently colored way points, excluding the ones in your house, you gain a number of moves, how many you get is dependent on their colour. In your alternate form, you can fly across pit and water, and kill with your body. You cannot depress pressure plates.
Some hints for the first room:
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×The easiest way is to go east,
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×loop around to the north west,
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×kill the southwest brain,
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×go north and then south through that skinny passage,
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×then up to kill the north brain.
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×If you are fast enough, you will be able to kill all the roaches.