Twitter/websites

[JugglingReferee]

Many many people use this site to improve their skills.

Personally, I don't know of a better forum, so staying here is your best bet.

Also check out YouTube channels to watch video. There is plenty of video posted here, along with comments.

Try state or local associations for training material. There will be some really good ones out there. Someone else will have to suggest which ones are good at this point in time.