PLEASE do not post repeat threads. I try to answer as many people as I can but I do HATE it when people repost threads and I normally do not answer these people. I'll give you a pass since you are young and new around here, but any repeated behavior will get you no answer from me... ever.
I agree with Furius... you mention being more athletic, so I will assume that you are playing sports. At your age it is NOT the time to undergo a training program specific for a sport. It's the time to use weight lifting to get stronger and larger, period. Any specific gains in athleticism should be made by doing sprinting ands agility work once or twice per week.
Anyway at your level, just plain getting stronger is the best way to become a better athlete.
As such you should focus on becoming really good at the big basic movements:
- Bench press
- Military press
- Barbell row
If you have access to a competent coach you can also start to learn the power clean but do not train it heavy yet, just become really good at it.
I highly recommend ready the following article: https://www.t-nation.com/training/current-state-of-sc-coaching
The Starting Strength program by Mark Rippetoe is a good option to get started: https://www.t-nation.com/training/most-lifters-are-still-beginners