Here's what I make the rookies repeat 10 times when I do the "Novice Walk" with them in the morning.
Look, then Brake, then Turn, then Accelerate. Sounds kinda silly and obvious, huh? But you'd be surprised when you get out there, look up late as you come to a gate, then try to brake and turn in at full speed because only then did you see that you are offline. And then you'll try to gas it to make up time, only to make it worse....
There's not a whole lot that's really Focus-specific. You'll be in either 1st gear or 2nd gear the whole time, and you should only really shift ONCE. (You'll waste more time shifting than you make up by being in a different gear about 99% of the time) Listen to the car, because it communicates well. Don't be afraid of the rev-limiter.
Don't waste another minute waiting on parts, or anything else. Just get out there and start racing! You will suck at first, and you will be slower than many other cars, but the only thing you will regret is not starting earlier...