Matt,
First of all welcome to the group!
There is A LOT of information on the forum. The search function can be a very powerful tool. You may need to post your search in several different ways but the questions you have, especially at the start, will most likely have been posed before and there will be a lot of useful advice.
Indeed the technical manual also has a lot of great information.
If you get no results, or are still unsure, post away, we are here to help. Sometimes, the search can be a bit daunting. Another way to start is to search only by the titles of the message. This may not get you all that you want, but it may provide a good starting point.
There are a number of parts sources referenced on the site (Buds Benz, Millers, K&K, SL Tech to name a few). The group can also help with local resources, there are a number of folks in the Virginia area.
One of our members has been known to hold an October meeting in the Virginia area, keep your eyes open.