An error bottle of a popular brand may gain some novelty value, but it needs to be really messed up. Otherwise, collectors want perfectly aligned labels.
Welcome to the forum! What a great collection to start out with. As a collector who started out young, I can say it's a fun hobby. My advice would be to keep learning and to not be afraid of making mistakes. At the same time, start thinking about how you are going to limit your collection...
Malt-flavored Mountain Dew. They call it Johnson City Gold and it's part of their regional campaign. Has anyone tried it? Think it will catch on? http://www.huffingtonpost.com/2012/08/15/mountain-dew-johnson-city-gold-soda_n_1778439.html
Yeah, almost all the O-So's are from Detroit, but there's a King size like the one you have from Williamston that I'm looking for. I know Clare, MI had an O-So plant. Probably other cities too, but I don't know which.
I think their crawler found "led" in the title and thought it was about LED lights and figured they might be able to hook all the LED enthusiasts on the antique-bottles forum.