I'd start running interval sprints out on the football field.
For the first four weeks of your workout I'd concentrate on the basics-squat, front squat, bent over row, bench, military press, deadlift. I'd use a fullbody set up on MWF and run it as a circuit.
Then after the four weeks I'd start putting in hang power cleans, depth jumps, single leg work, etc
You might take a look at this site and go the training articles and look at the Westside for skinny bastards program