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."
If you want to do some casual research for a future trip, you can get fare estimates using the Kayak skill. You can say, "Alexa, ask Kayak where I can go for $400" or "Alexa, ask Kayak how much it costs to fly from Los Angeles to Dublin." The skill will ask for additional information and eventually provide you with a series of options and price ranges.
If you have an audience that cares about what you and you have content that you would like to share with that audience, Alexa Flash Briefing is an ideal way to engage with that audience. Whether you are posting your Flash Briefing hourly, daily, weekly, biweekly, or some other frequency, enabling your audience to add your content to their Flash Briefing is an easy way to become part of someone’s routine. Examples of Alexa Flash Briefing content would be updates from experts (health news, stock tips, political campaign news). See below for a more extensive list of examples. But the sky is the limit. If you have something to say and you have people who would love to hear from you, and hear your speak the content in your voice, Flash Briefing is ideal.
You'll notice in the lists below that many Alexa skills are called by using trigger words like open, start, play and ask. While select skills require you to use specific terms, others consider them to be interchangeable and will work with some or all of these phrases. Over time you'll begin launching your favorite skills by the words you feel most comfortable using. Initially, though, it can be fun to play around with each.
As of this writing, Amazon has thousands of sources for flash briefings.  The sources they include can be hyper-local like your local news station. Amazon also has specific topics like tech or business, or general info.  Many of these sources, like NPR, are podcasts provided by Tune-In.  These briefings are audio files Alexa plays for you.  Other sources like the AP news stories are read in Alexa’s voice.  I wish Amazon told you which ones were audio files because her voice drones on after a while.  I hope I get to change her voice like I can with Siri.  Right now, you can just change the language to the English (UK) or German.

Once you’ve filled out the page, it’s time to make a listing or profile page for your flash briefing. This process is the same as with any Alexa skill: give your briefing a short description, a long one and a profile image to use. After that, submit your skill and begin recording your content! When you upload new content to your audio host, it will automatically push to your flash briefing via RSS.
When Alexa recognizes your voice, stories and news items you’ve already heard will be skipped. To set up voice recognition, say “Alexa, learn my voice.” This is feature is especially useful if you listen to flash briefings on weekends when many flash briefings don’t post new content. With Alexa voice recognition enabled, you won’t hear the flash briefing episodes you already listened to.
Some Alexa Skills connect to smart devices, bringing voice control to a smart home from smart lights to locks, smart thermostats to televisions and more. Alexa becomes a home's second in command: users tell Alexa to tell other devices what to do. There are Alexa Skills for almost any kind of smart home device. These Alexa Smart Home articles can get users started immediately, quick start guides for using Alexa: 8 Alexa skills for your professionally installed and monitored security systems, 5 Alexa skills for security you install yourself, but have professionally monitored, and Alexa Skills that help lock down the security of your smart home.
×