To aid leagues in providing a positive introduction to baseball and softball, Little League developed a curriculum that has been shown to improve the Tee Ball experience for players, parents, and coaches.
https://www.littleleague.org/play-little-league/tee-ball/
The Little League® Coach-Pitch Program was created to provide volunteer managers and coaches in the Little League Minor Baseball Division with the appropriate direction to organize and efficiently operate practices throughout the season.
https://www.littleleague.org/s/coach+pitch
Little League University is designed to transform the way volunteers, league and district administrators, coaches, umpires, and parents experience learning about the Little League program.
http://www.littleleagueu.org/
A series of practical, age-appropriate guidelines to help parents, players and coaches avoid overuse injuries and foster long, healthy careers for youth pitchers.
https://www.littleleague.org/partnerships/pitch-smart/
Positive Coaching Alliance (PCA) provides a framework and tools for local Little League volunteers to develop a culture of positive, character-building competition.
https://www.littleleague.org/partnerships/pca/