Ding Ning / awesome service: slow motion and tutorial on her serve

 https://www.youtube.com/watch?v=fy9cfkzQhL0

table tennis physics: Physics of long pimples - Three basic mechanisms -

https://www.youtube.com/watch?v=owZMHGicVqw 

also visit this youtube channel for more animations: 

youtube: ping pong physics

ruwen // chopper vs chopper mesmerizing

 https://www.youtube.com/watch?v=G4bOzqMW9zs

serving trick - animation

https://www.youtube.com/watch?v=Q2Ap91e18wQ 

timo boll - 3 killer serves insight

 https://www.youtube.com/watch?v=91am9-0g7o0

Serve & Serve Return Training Videos - A Closer Look

https://www.youtube.com/watch?v=gyK7gHPbkcA 

Forehand loop development and foot work

https://www.youtube.com/watch?v=pQd2RVEV1PE 

excellent tutorials, starting with basica

https://www.youtube.com/watch?v=oO7qUBAs3dE 

Ma Long's grip: position of the thumb in back/or top spin drives...

https://www.youtube.com/watch?v=-GAbun08NCE