SUBREDDIT: r/personalfinance
TITLE: Starting over! Again.
POST: I'm a 23 year old recently single mother of a 10 month old. 

I'd been unemployed for the past 8 months since he made enough to support us so I could be a stay at home mom. 

Now I'm working two jobs, I'm about to be pulling in around $1,200.00 a month. My only bills are car insurance and my cell, which is $180.00 a month. Living for free with my mom, I get WIC and foodstamps. 

He left me in about $3,000.00 worth of various debts and old bills, what do I do now? 

I've heard about debt consolidation loans but my credit is terrible. (516, last I checked) 

Is there anything I can do besides chip away at my debts one at a time? 

Is there anything in particular I can do to start rebuilding my credit?
TL;DR: 
Starting over again, pulling in $1,200.00 monthly, $180.00 in monthly bills, $3,000.00 in debt, 516 credit score, what do?