got the BT hub for nothing. Mine just arrived one day, so I thought I would give it a spin. I've used it ever since - it works just as well as my previous Belkin N router, but no better.
The answer to your second question is yes, it will be easy to install and configure - just follow the instructions. Once it's up and running leave it switched on, it may glitch if you turn it off, and will require a reset.
Otherwise give it a try - today's routers/hubs are a breeze to set up.