There are two common types of FFL's that you may be eligible for.
The first is the C&R or "Curio & Relics" collector's FFL. This is a FFL designed for collectors. It would allow you to obtain any firearm that is over 50 years old, or any firearm specifically listed on the C&R list by the ATF, without going through a dealer.
The C&R license is easy to get as it's designed for collectors. There are record keeping requirements and you can NOT use this license to "engage in the business of dealing in firearms."
The fee is, I believe, $30 for three years.
The other common type of FFL is a 01 Dealer's FFL. This is the license for people who are *in the business* of buying and selling guns as a dealer.
While you do not technically have to have a store front to get a 01 Dealer's FFL, you do need to intend to "be in the business" of buying and selling firearms.
This license is NOT for just getting guns for your own personal collection. The fee is higher, $300 for three years, and the record keeping is more stringent. This is the license the gun shops have.
To get this license you would have to show that the address for your "licensed premises" is in compliance with all local zoning laws. That means if you don't intend to have a store, and want to sell out of your home, that your local zoning regs allow you to do so. The ATF will check.
In short, unless you intend to become a real dealer in firearms, the C&R license is probably your best bet.