@Darius Moody - Yeah, that's correct. That is probably the easiest way to think about it. The seller basically acts as the bank. The title company completed loan paper work and closing documents which included a deed of trust and a promissory note. Neither of us had lawyers involved, but this was a very straight forward deal between two familiar parties. Based on the complexity of the deal and your circumstances I would encourage you to at least mention your plans to your attorney before going through with it.
I wouldn't carry the comparison to a bank too far though. Some of the biggest benefits of seller financing are that the seller DOESN'T act like a bank. The process is a lot less formal, and the title company said we would have had ten times more paperwork if there had been a bank involved. Everything depends on the seller you obtain the financing from, but in this case a bank would have had a lot of requirements that my seller wasn't necessarily worried about.
For instance, the down payment. I only put 5% down on this property. A bank would have likely required at least 20% down for an investment property and plenty (I've heard as much as 6 months) of reserve cash in the bank to make sure I could deal with vacancy. Next we have PMI (Private Mortgage Insurance), or FHA mortgage insurance. If I would have purchased this property through a FHA loan via owner occupancy and then rented it out later I would have a PMI payment of about $15/mo. Not much, but it adds up and is based on the total of the loan. Read more here: Bank Rate.com
Other possible benefits of seller financing include, possibly no credit check, low or no origination fee, flexible interest rates and terms, no inspection requirements, no appraisal fees, and I'm sure there is more but these are a few that come to mind.
I think the guys at bigger pockets are huge proponents of seller financing, and I have heard a lot of people mention it on the podcast, so I would encourage you to learn more about this important investing tool.