Okay, trying to figure out were to start at becoming legal. Is there a site or a list that breaks everything down? Like, okay first you need to do this and then this....? If there's not, one would really helpful...

It's different in every state, even every county! These links may be helpful to you in Tennessee:

http://www.state.tn.us/agriculture/regulate/permits/permit4.html

http://cakefun.blogspot.com/2005/08/tn-farmers-market-vendors-can-sell.html

Your first call is always to your local health department or department of agriculture. Hope this helps!