If you can bear the thought of council accommodation (and it's really not that bad), then get yourself on the housing list, although you should be prepared for a long wait. You should also contact a few housing associations to see if they can help - the council will probably be able to supply you with details.
You will almost certainly be eligible for housing benefit and council tax benefit, and your local council will also be able to help you there.
The government are taking great pains at the moment to encourage single parents into work and to that end there will be funded childcare available as well. You should also be able to claim working tax credits.
I can't promise life will be easy. It's tough enough bringing kids up when there are two of you, but you still have a little time to get yourself sorted. Take a deep breath, stand back for a minute and then deal with things one at a time.
Here would be a good place to start:
http://www.adviceguide.org.uk/index/life/benef its.htm