K.H.
i don't think it matters that you're a single parent. i work in childcare and we have had several foster children (currently one that is with a single parent). i think that is wonderful that you want to be a foster mom. just remember--some ages, some children, will have problems and they may be tough to deal with. and be sure that you'll be able to handle giving them back (its very easy to get attached, especially with infants). we had sisters that one foster family had at 2 different times and knowing their background--it was heartbreaking that the courts would give them back. all of us at the daycare cried. it still upsets me to this day.
be strong! my prayers are with you!