As usual with a new product launch, certain bloggers get early access to be able to publish their opinions and technical information. Matt Timmons-Brown is one of these. He has done a walk-round and put the Zero through it’s paces in his excellent video:
Another excellent video is from Alex Eames of RasPi.TV which goes along with his in-depth blog post:
You can buy a Raspberry Pi Zero either by getting The MagPi magazine for this month (issue #40) or by visiting The Pi Hut. The Swag Store also has them, but is out of stock and Pimoroni also has them (and is running out!).