Here is my personal favorite compilation of go-to links to learn and debug my pine scripts:
I'm an active member of the Pinecoders community on TradingView. I'm mentioned on their page as a TOP author and I learned a lot of cool concepts from those Pinescript mofos
Pinecoders FAQ
A bit more advanced level but contains a lot of good stuffThe Reference Manual
The Pine scripters bible - list all the built-in functions/variables specifications (how to use them, list of parameters, etc..)Pinescript V4 specifications
Not many are aware this space even exists... that's a shame because we find loads of gemsKodify
Want to learn how to structure a pine program, write a strategy, and learn with one of the best pine tutorials out thereBacktest-Rookies
Another great website to learn pinescript - complementary to all the ones listed aboveTradingView features roadmap
To know which features TradingView will release next