Very many thanks to Chris McKitterick. I found a lot of a most interesting things in his journal:
http://mckitterick.livejournal.com/ And more, reading his site:
http://christopher-mckitterick.com/ This subject I found in his journal was of a great interest for me; "Writing Advice: On "Write What You Know."
Found here:
http://mckitterick.livejournal.com/750401.html I'm reading, thinking all this over and getting ready to share my thoughts with my friends. :)