Who, er, what is Amazon Alexa, you ask? Alexa is the brain behind the Amazon Echo, Amazon Echo Dot, Amazon Tap and the voice-controlled assistant inside the Fire TV. The female voice lives in the cloud, and is thus always up to date. This virtual personal aide learns your voice and preferences as you use her. She also has her own companion Alexa app for Android and iOS devices.

Make the most of the Amazon Echo, Echo Dot, Tap and Fire TV by learning to control the virtual assistant Alexa inside.

Source: Amazon Alexa Guide: Tips, Tricks and How-Tos