"But generally not how to solve concrete task like doing web stuff, solving numeric problems, writing compilers, or doing AI development. For such topics separate books exists -- unfortunately not yet based on Nim language. "
Exactly! The beginners guides are very easy to follow and understanding the basics was not at all difficult. But once you get a little more towards the intermidiate level things start to be become difficult. Advanced computer scientists coming from other sytems programming languages will be able to read the manual and figure it out for themself no problem. This is not the case for a hobby programmer like me. It takes a lot of work and effort to create these books and tutorials, so it is very understandable that there aren't more. Much, much respect and kudos to those that do, and to the crew that maintain and improve Nim. Btw I have tried Pascal and C compilers and I have to say, the Nim compiler is very fast. Almost instant executable, very impressive.