Most of your questions have probably already been answered in old threads. I have never figured out how to get the search engine on this site to work so I just google the question and end each search with "Pond Boss" as the last two words. Example, "How to control FA Pond Boss." You will be up all night reading!

By the way, do not just throw an aerator in a pond full of muck and fire it up unless you are trying to kill all the inhabitants. There are threads explaining how you slowly introduce aeration under your conditions.
Another good resource is Pond Boss Magazine. You can subscribe from this site. There was an excellent article on winter aeration in the Jan/Feb issue with Part 2 promised for later this year. If you decide to subscribe, I think you can back date your subscription to get the Jan/Feb issue if you call the girls in the Pond Boss office.
P.S. My favorite section of PBM is "Ask the Boss" where readers write in with questions. Kind of like Dear Abby but is Dear Bob!