I'd like to see what channel (e.g. 1-10, I believe) each SSID in the list is. How can I find that information?
Install inSSIDer from MetaGeek. It is simple to use and gives you information on your and other SSIDs in your area.
I'd recommend Free NetSpot for these purposes. All the necessary information is in the Discover mode window. Here are some screenshots:
I use Acrylic Wifi. The Home version is for free. It runs on Windows 7,8,10 but requires .NET Framework 4.5