How do I fresh install on used OSX 10.6.8? I just bought a used MacBook and I want to wipe it clean to start fresh. It didn't come up a DVD or anything.

I tried following another post on here that said to push Option on start up and it sounded like it could do a fresh install using an internet connection. However when I did it the only icon I got was the hard drive in the laptop.

It looks like you can purchase the DVD on the apple website (http://store.apple.com/us/product/MC573/mac-os-x-106-snow-leopard) though here it looks like it offers a free upgrade to http://www.apple.com/osx/how-to-upgrade/ 10.10.1

But it's not clear if that applies to me since I'm not the original owner. It's also not clear if I'll run into complications in general since I'm not the original owner (eg is the laptop tied to someone else's iTunes account right now?)

It's also not clear if it'll allow for a "fresh installation". I'm more of a PC guy I'm not really familiar with Macs. What route should I go to wipe the laptop?
The Recovery HD (which is what holding down Option would enable you to access) didn't come into being until Lion. You should go to the App Store, sign out of the previous owner's Apple ID, sign in with your own, download and install Yosemite, and then you'll have the Recovery partition from which you can do a wipe/fresh install.