Volleyball Canada has help tips and drills for teaching youth who are beginning volleyball explains each age class and what the children should be learning at that age.
Volleyball Canada Development Model has a great website for developing young players they have videos that teach age appropriate techniques as well as games for each developing stage.
Age Appropriate Games:
Grades 1-3 (6-8 years) Circulation Volleyball
Grades 4-5 (9-10 years) Atomic 1
Grades 6-7 (11-12 years) Atomic 2
Grades 8-9 (13-14 years) Tripleball
Grades 10-12 (15-18 years) Standard Volleyball