A long-ish lightning talk on Arduinos and the Internet of Things (IoT) that was presented at the 27 March 2014 Fort Wayne Open Source - Developers meetup.
A few slides on IoT 101, some on Arduino 101, and followed by more slides on example cheap sensors that can interface easily to an Arduino.
And then finally some yap on Xively which has a decent API for for interfacing your valuable data to the IoT, setting triggers, and exposing it to be consumed by other apps/devices.
A few of the slides were cobbled together from slideshare. Most content came from other random locations such as my brain. But if I stole any slides or images from you, thank you, I've put them to good use.