How to add extra ethernet ports if your router doesn't have enough

Ethernet ports are often in short supply. If you run low, a cheap device lets you add more to your existing router without fuss.
Lifehacker

Here's How a Router Actually Works

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Should you buy or rent your router from your internet service provider?

Internet service providers often offer their routers for a monthly fee, and some let you buy the equipment outright.
Ars Technica

Can't access modem configuration page after adding a wireless router

I've just bought a Buffalo WHR-G54S Wireless router. I have an ADSL connection, which goes through a Thomson SpeedTouch 516v6 modem. I've configured it as a bridge and connected it to the router, ...