Learning aids
Lego Technic
https://rebrickable.com/
http://shop.lego.com/en-US/Pick-A-Brick-ByTheme
YouTube channels
Practical Engineering
Cameras
Articles / Videos
Youtube - World smallest Drone Spy cam may soon be used by the U.S. Army
Home automation
Misc links
http://www.smarthome.com/
https://www.pubnub.com/
http://www.insteon.com/