In short, you cannot buy a house now
. Your financial 'house' is in havoc. Sorry, if I sound harsh, but the truth always bites.
First follow everyone's advice how to organize everything and decrease your debts. After you've got that in order and have an EF, then you must save for a downpayment. Afterwards you can think of getting a house.
Being an owner of a house brings another list of issues/money spending that you're not dealing with while renting.
