Welcome to DG. If you want, you can add me onto your friends' list and if I happen to be online, drop me a line and I can play a few games with you (even against Bots) or give you tips or whatever. I try to be farily newb-friendly :3 Though I'm by no-means an incredible player.
For a lot of the general gameplay tips, read around on the forums. Tons of information is here and it'll help you tremendously.
But, for now, play single player against normal or easy bots for a few games, try different people. The first game I was like WHAT DO I DOOOOO as well, I think it's a pretty common reaction 