Basically. go to this site and do some research man. If you're going to get really into this parkour stuff then you should read about training your joints and keeping them healthy and what not.
Nutrition is seriously 90% of you're workout.
When I was a senior in highschool I got a gym pass and would work out like 5 days a week for 3 hours at a time and guess what? I didn't get any stronger nor did I look any different at all! I was 160lbs at the time. I did my research on
completely changed my eating habits (and to give you an idea I wasn't into all that protein powder stuff, I probably drank 3 protein shakes) and I did this for 6 months and gained 30lbs....30lbs! seriously. I was 190lbs at my prime. I still eat very well and I only work out once a week now for 1 hour and I'm still 185lbs. so seriously jake look into nutrition first before you do get super into working out; it makes a huge difference. my .02 cents