Volleyball

https://en.wikipedia.org/wiki/Volleyball

Sites
https://www.phdvolleyball.com/
https://www.volleyball.world/
https://www.volleyball.com/
https://www.fivb.com/

Tube / slides
https://www.youtube.com/results?search_query=Volleyball
https://www.slideshare.net/search/slideshow?searchfrom=header&q=Volleyball

Ball

https://sportsmovement.blogspot.com/search/label/Basketball 
https://sportsmovement.blogspot.com/search/label/Volleyball 
https://sportsmovement.blogspot.com/search/label/Football

Basketball

https://en.wikipedia.org/wiki/Basketball

Sites
https://www.breakthroughbasketball.com
https://www.basketball-reference.com
https://www.hooptactics.net/
http://www.nba.com/

Tube / Slides
https://www.youtube.com/results?search_query=Basketball
https://www.slideshare.net/search/slideshow?searchfrom=header&q=Basketball

Sporting records that are unlikely to be broken

https://www.sportsrec.com/
http://www.rediff.com/cricket/slide-show/slide-show-1-asia-cup-2012-sporting-records-unlikely-to-be-broken-tendulkar-ripken-chamberlain/20120317.htm

Glossary of cricket terms

http://en.wikipedia.org/wiki/Glossary_of_cricket_terms