I know the KH Movement. And believe me -> scripts like KH Movement is not a good starting point for newbies. Please start with easy things like pong, or have a look at my 2.5D spaceshooter (also to download via AUM 82, or 83 - i cant remember) - a realy good workshop is created by HeelX - the workshop name is "Rudi" on the 3dgs Download-page.

But scripting a shooter-game (as a newbie) is realy - REALY not easy.
(May you could start a 2D shooter)


cheers
Marcel