Ok, so I just got Starcraft, I try to play yet i'm confused about what i'm ment to do.. I figured out that the... uh.. those little alien guys that grow into buildings... that they actually grow into building and units... yeah...
anyway the enemy kicks my ass in a few minutes and I'm looking at the screen in shock

, is there anyway to change the level of AI
ie. easy/Med/hard?
also any other websites or advice about the game would be nice.