FHA allows 3 1/2% down payment on a good FICO and verifiable work history and decent salary for the purchase amount. There are some first time programs out there but a lot have been ended as states are running out of money to fund them.
Believe the govt. has a $7,500 Down Payment Credit which is actually a loan payable over 15 years at a very low interest rate. Believe that's what is going on now. Not bad at all.
FHA homes must be appraised and have certain things in them, as well. No big deal but some REO's have been totally stripped out of appliances, bathroom fixtures, etc and they can't qualify.
Work with a reputable REALTOR. Check his license number with your states DRE website for conditions or any disciplinary actions taken. Check his broker, also.
Get and check references of previous clients.
Your REALTOR should be able to either answer all your questions (financial, escrow, title, comps, etc) and if he/she can't, then they usually work with reputable firms that can answer specific questions in their field.
All this at no cost and obligation.
Educate yourself first but work with a REALTOR you have checked out and you feel comfortable with.