The site by Ralf Ebert has some good basic introduction for iOS. Of course, I have to use chrome translate to read it in english.
cocoanetics - You can make any iOS device (>= iPhone 4S) and any Mac (>= late 2011) sporting a BTLE chip into an iBeacon.
An iBeacon is identified by 3 values: proximityUUID, Major and Minor. The first being a UUID and the two latter being two 16 bin integers. You can construct a CLBeaconRegion in 3 levels: only UUID, UUID plus Major, UUID plus Major plus Minor.AutoLayout - rather than the master / details , gives the ablity to edit details inline