I think it's best to be your own guide if you want to disable services since one person's idea of what's unnecessary might be necessary for another. For example, i disable all Bluetooth services, printer, Xbox, geolocation, some Intel stuff and some others here an there because i don't require any of them. But that's not good advice for someone who uses Bluetooth, printers, Xbox, etc.
Open up the Services and read the description of each service. Disable what you want. Or make it manual or delayed start.
Disabling services isn't necessarily needed though and it's unlikely to be the magic bullet for a specific problem, although i guess it could be.