Government Grants

how do i go about trying to get a government grant? when i try to find out how to do this on the computer all i get are ads to buy a cd. is there someone out there who has gotten one? i would like to know in detail how to do this. i have been on grants.gov and i find it confusing. i am looking for downpayment assistance grants. can anyone help me with a more easily understandable way? thanks.

Shanta