Starter System - 1-2 Cams

25x 360 PTZ  While large, this cam is worth it.

Use this POE+ device to power the camera using a ethernet cable.   

Ethernet Cable to power the camera.

TinyCam Pro is great for viewing from your Android Phone or iPhone.

Hikvision DS-2CD2342WD-I 4MP WDR EXIR Turret IP Network Camera 2.8mm

DYI Starter System - 5-10 Cams

Nice Kit of cable tools to make your own cables

Run a single POE+ (Power over Ethernet) cable to your Cams for power and ethernet.   This Switch can handle 8 POE+ Cameras

25x 360 PTZ  While large, this cam is worth it.

Hikvision DS-2CD2342WD-I 4MP WDR EXIR Turret IP Network Camera 2.8mm

BlueIris is the defacto standard PC software for managing all your cameras.