Currently we do not have a help manual but we are working on one. Until then, here are some tutorials on how to setup NewsLeecher and general usenet usage. Perhaps these will answer any other questions.
Guides on setting up NewsLeecher
German tutorial (Added 6/24/2006)
German tutorial (a bit outdated)
Another Dutch tutorial
General Usenet starter guides
http://www.UsenetAdvantage.net/ for provider comparison and user guides