Eat plenty of healthy fats (along with some saturated fat). Diets higher in fat lead to higher levels of the almighty Test. Don't go too low with the carbs or protein, either, though.
Phill's right on with getting quality sleep. 8-9 hours is great.
As for training, stick with something heavy and don't over do it. Basically any routine from here.
Also, pick up some ZMA. Great for sleep and helps maintain healhty levels of Testosterone; hard training individuals tend to be depleted in zinc. Plus it's only 9 bucks.
Hope this helps.