Your English sounds fine to me! Much better than my Mandarin or Cantonese! Sorry I can't help with specific books, but you are on the right track with RCJI. I am also a relatively newbie to Jets and have found a wealth of information right here on this site. I know it isn't the same as being able to curl up with a good book and read it at your leisure, but there really is a lot of stuff here.

I randomly search for specific terms I an interested in learning about and then read through those threads. Some of them turn out to be garbage, but then some of the threads have a real wealth of information in them.

Maybe somebody else can help out with book suggestions, but I say keep reading RCJI and also use this site as a resource.

Good luck with getting into jets.