What resources do you use to learn the details of using a new language when you are competent in many other languages? Not the basics like class hierarchy, syntax, and loops, but more language unique stuff. Eg:- Compilation model: bytecode/native/whatever- Are there multiple implementations which are most used and why?- Package management and versioning- Common build tools- Concurrency/io model (async, os threads, green threads, etc)- Language-specific/more-common data structures- Sources of UB ...