Yep, i'm from knoxville,
Not an expert brewer by any means, but i'll help where I can.
The fermentation station is a nice little homebrew shop on Kingston pike, and wouldn't be too far to drive from Maryville.
There is also a well respected homebrew club around called TN Valley homebrewers. They have a booth at the brewers jam every year and usually have some good beer to share.