General help with Javascript

Hi all.
I am self taught in Pascal and have many years ago sold shareware all over the world. Still today I love my delphi and Lazarus stuff. Learnt back then using books and mates that helped me as there was no internet. Used to run a BBS.

Being an electrician by trade have spent all my working life doing automation of production systems and can program microprocessors, plc’s and scada units.

My question is I am now using node-red for my automations and as such love using function blocks and through asking questions here and google am slowly working it out but am trying to find a site or a IDE that I can use to advance my skills. What does everyone recomend? As an example I am playing with bitwise and found a forum of general javascript.

I’m not experienced in Javascript, but I found this website useful.

https://www.w3schools.com/js/default.asp

Thanks you