I Need Advice

I have this guy friend who grew up with little to no affection given in his life. He grew up in a small town. He grew up with a real bad area as he would describe it. Abusing alcohol and drug usage.
His dad remarried and left him. My friend has abandonment issues.
Stayed with his mom and his mom kept dating a chain of abusive boyfriends. To the point that the mother would neglect her own son. My friend became homeless at one point. He said that ever since he met me.. he felt this drive to do better. We share a lot of conversations but he does not know where to gain access for therapy as it is something difficult and expensive for him. Is there a free/affordable website that I can recommend to him? To get him back on track for his mental health?