I don't know if this site have ever been mentioned here on EAB, it was last updated 16 June 2017 and from it's URL it's named
Amiga Coding. Please have a look at it. It have a lot of stuff about AMOS, 680x0, Blitz Basic/AmiBasic, Basic, C and much more. Maybe a good help for all new coders out there, no matter what language you code in.