For tracking your food, you can use the Track by Nutritionix skill, which lets you record your food intake using your voice, or ask for caloric values of foods. (Alexa does the latter by default.) Say things like, "Alexa, tell Food Tracker to log a cup of almond milk" or "Alexa, ask Food Tracker how many calories are in two eggs and three slices of bacon."
One of my favorite features of Amazon’s voice controlled speakers, the Echo and Echo Dot, is the Alexa News Flash skill. Out of the box, it plays you a quick news briefing from standard news sources. What you probably didn’t know however was that you can customize your Alexa Flash Briefing with literally thousands of skills, tailored perfectly to the news you want. Here’s how it all works and how to set it up.
How does Alexa work? Once you buy an Amazon Alexa device — Amazon Tap or an Echo Dot — the device connects through WiFi or Bluetooth to the internet and then to other devices. With the most common devices, the Amazon Echo and Echo Dot, people merely say "Alexa," which wakes up the device, and then ask for what they want. Alexa Skills radically expands the bots repertoire, allowing users to perform more actions with voice-activated control through Alexa.