Hi Tracy,
It can be a bit overwhelming at first, learning all that there is to know about MGUS and the related disorders. But just take it a little bit at a time, and you'll slowly pick up all you need to know. This forum is a good place to do that, as there are lots of people going through the same thing, and lots of people with really good knowledge about the disease.
For example,
this posting by Multibilly yesterday afternoon will probably answer a lot of the questions that you have.
One important thing you can do right now is start keeping track of your lab results. Even if your hospital or doctor's office has the results online, print them out, and put them in a folder or binder. You never know if you'll be with the same hospital or doctor's office 5 or 10 years from now.
Also, if you can, use something like Excel or Google Sheet to start tracking and graphing your main lab results. Start with your immunoglobulin levels (IgG, IgA, IgM) and your M-spike, and also your free light chain levels.
Then, start adding more results, like your calcium, creatinine, hemoglobin, etc. It's really useful to get comfortable with the trends in the lab results and how they can bounce around.
Good luck!