Parisi Speed School: An excellent resource for developing speed and overall athleticism
https://www.parisischool.com/locations/fairfield/
Fitness Videos: Important exercises for athletic development
Bulgarian split squat- https://www.youtube.com/shorts/i3BVXTxn2JQ
Kettlebell swings- https://www.youtube.com/watch?v=g9rs64-azbg
National ultimate training camp-A five-day sleep away camp with top quality coaches. An excellent resource to master the fundamentals
https://www.nutc.net/
Drills for skill improvement
Games for coaching ultimate by Ian French (Book)
https://www.theuap.com/ultimate-frisbee-drills