I use this extensively rather than re-inventing the wheel.
Paul Grundy, the admin, keeps it up-to-date and welcomes any corrections or new information, especially in a well-written article, supported by WT publication quotes.
The 2 places I check first is www.jwfacts.com and then searching on JWN with key word(s) to see if the topic has been already extensively researched or commented on.
Don't be frightened away by the material being more than 3 paragraphs. The quotes from WT publications is are extensive and from publications that are older and less available.
I find it good to read many posts on a single topic and expand my knowledge and sources.
Blondie