My best recommendation is that you go to the nearest community college and talk with someone there about taking some vocational interest tests and personality tests to determine what kind of work you're best suited for.
In the meantime, will you be able to stay in your home? Will you be able to stay there AND collect child support? Do you have family members and/or good friends who can help you care for the kids?
When I lived in Reno, Nevada, my daughter attended the community college. There's was actually a Boys' and Girls' Club on campus where parents could leave their kids while they attended classes. The same college had a women's re-entry program for women in circumstances such as yours.
Help is available. Please start talking to people and find out which direction would be best for you and your kids.
Best wishes!