For table tennis? There's so many: PingSkills: https://www.youtube.com/user/pingskills https://www.youtube.com/user/pingskills Tom Lodziak: https://www.youtub

For table tennis? There's so many: PingSkills: https://www.youtube.com/user/pingskills https://www.youtube.com/user/pingskills Tom Lodziak: https://www.youtube.com/channel/UCqHc12tVGhzBtlMUq7MR7wA https://www.youtube.com/channel/UCqHc12tVGhzBtlMUq7MR7wA PingSunday: https://www.youtube.com/playlist?list=PLnSKFBegbrmsimjnC9p-GBSu3mba6zw9F https://www.youtube.com/playlist?list=PLnSKFBegbrmsimjnC9p-G... Coach Lin: https://www.youtube.com/channel/UChW6mCKAPsYIEYnH5jnkCyw https://www.youtube.com/channel/UChW6mCKAPsYIEYnH5jnkCyw And many more that them have very good and useful content.