I have a friend in CA and she did this. There was a process of training and getting "certified" which she and her husband did, and enjoyed. Then, literally, the next week, she had a beautiful precious baby boy. He was returned to the family a month later, but I understand that this year she took a foster in and is in the process of adopting (and finally got pregnant on a cycle).
As I understand it, it is highly local, so I would recommend googling foster adoption for your county, and then seeking a local support group which can help with advice.
This is a great option, and I am sending you huge luck and hugs!