Keep up with it every day? I see an update maybe once a month there. As far as Mini-ITX boards go, VIA makes most of them. They are all the same size so the model is not that big of a deal. As far as PSUs go, you can use a normal PC one. Or go fancy (I did) and get one from mini-box.com. Cases are very pricy. But unless you want one for your entertainment center, the best fun is building your own.

As far as components go, Mini-ITX are just small motherboards, same stuff as a normal PC.