If your high school and not running indoors give yourself and brake dude, just back off for 2-3 weeks w/ easy mileage and days off, then start at it. I like training on the grass (golf course) this early for most all the work including tempo runs; 4 x 800; 8 x 400's w/ 30 sec rest. Now I keep a mix, including easy milage (1-hour runs) days adding one day hitting hills at the end of the run (10 x 100) steep 35% grade and/or 15% and one day 10 x 100m pick ups at the end. For me its too early for track work, focusing on strenght and saving the legs staying on grass. I've been training on a 3-week cycle with the 4th week easy mileage to get ready for the next cycle, which is harder. Jan-Feb I will add, 10-15 x 200's w/ 30 sec rest, 600's, 10 x 100's latters, and 8 x 300 all on the track. But I like to mix the golf course intervals in with the track this early. You should know that may 1st week is run just to get use to the new work load, keeping the same work load in the second/third week but harder and so on. You probably know by now that all runners are different, each may need something completely different. I always felt this time of year is a strenght/power building period, plus adding light weights high reps. . Also you may want to read several of the training books. Go to the Track & Field News web site, they have a good library. Learn all you can and whatever you do, set up a plan over the next 3-4 months. Good luck..