Hey r little babe, I wish I did know somewhere that you could advertise for free. That's a great question to pose in one of the group pages, or on the Q&A section (our memebers have so much information). You can advertise at Work it, Mom! inexpensively. We have packages starting at 20 dollars and if you enter the promotional code member, then you can save an extra percentage. Here's the link to market place in case you're interested.
http://www.workitmom.com/marketplace