Looking for a research/purchasing guide

Just starting to research home server stuff and a lot of resources I'm finding either just explain the benefits and capabilities of a home server or people that already have some idea of what hardware they already want and need help making a final decision.

What I'm asking for is help doing my own research on hardware. Something that explains the nuances of different components.

I'm wanting to do some small scale game server hosting which seems to be a less popular use for home servers.