Washington Youth Soccer has numerous resources for coaching each age and stage of the game. Below you'll find their handbook, COVID Return to Play Guidelines, and a link to their document library. You can search by age group "U8", "U10", etc.
NW United has developed an excellent handbook for rec soccer player development. See link below to download the PDF.
Check it out!
Washington Youth Soccer Return to Play Guidelines
Washington Youth Soccer Document Library
Washington Youth Soccer Handbook
NW United Rec Soccer Handbook