I've never used pfSense, so couldn't tell you. If you are referring to adding a wireless NIC to the pfSense machine and having that box be a combination router

I've never used pfSense, so couldn't tell you. If you are referring to adding a wireless NIC to the pfSense machine and having that box be a combination router/firewall/AP, the hardware side is easy. Wireless NICs are trivial to install - just plug in and run an antenna somewhere useful. From a software side, it's really easy to configure an AP in OpenBSD - just a quick ifconfig. I have no clue if pfSense supports this sort of config through their management interface. I would assume yes, because it seems basic. If, on the other hand, you are talking about having a discrete AP as a different piece of hardware on your network, this is also straightforward. I have both a DD-WRT flashed Trendnet router/AP acting as a non-routing AP and some Ubiquiti APs on my network. Ubiquiti stuff is trivial - just plug it in and configure through their management interface. The DD-WRT was a bit more work, because it wants to be a router by default. It's easy enough to turn off its router and just run as an ethernet switch + wireless bridge. I had to do some searching for a guide that indicated the right settings, but it was easy enough once I knew what needed to change. All of my home networking setup was my education in networking. I did this with no significant experience prior, except some high level theoretical knowledge, and having messed around in a consumer router/AP's settings before. Honestly, I'd say just give it a try. Don't be afraid to do some searching and some trial and error. And if it doesn't work out, return the stuff and buy the full gamut from a vendor that sells networking gear with a good interface. I like Ubiquiti equipment from my personal experience with it, but I haven't used other vendors to give you any comparison.