If there is a School of Denistry in your State contact them and ask them if you can be a patient for training purposes. I did and they gave me a free smile....... just a thought.
Just a suggestion but go to your local architect's office and ask to be a draftman's intern. Or to you city planning dept and ask can you learn how to plot maps.
Go to www.grants.gov for free, click on contact us for the federal grants officer, call that number as for help form a grants specialist. Also if you go to the public library you can research grants for free.
Do not leave your son alone, there is too much child abuse out here. Go to your local social services center, or police station and ask them about putting you and your son in a safe environment. Please remember your son' safety and ask an officer for help..