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."
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.
The first of the Alexa flash briefing options to include is an error message. Alexa will read this to your audience if your briefing is unavailable. Next, you’ll be asked to paste the RSS feed provided by your audio host. The “preamble” field is a short, introductory cue that Alexa will read before delivering your briefing. Finally, fill out any remaining Alexa flash briefing options — frequency, briefing name, category/genre and more — and soon you’ll be ready to launch.
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.
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.
The Capital One skill allows you to check your credit card balance or make a payment when one is due. This is secure: The skill performs security checks and requires you sign in using your username and password. Then, when you open the skill, you must provide a four-digit code to confirm your identity. Just be wary of who is around when using the skill -- anyone who overhears you say your personal key can access your banking or credit card info just by asking Alexa.
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.
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.
This shouldn't scare you away, however. Alexa-enabled devices are great to have in your home and, with a little tweaking, can prove to be very good companions. I’ve hand-picked some of the most useful and unique Alexa skills from the thousands that are out there. Many of these skills will not be enabled by default, so you may need to follow the proper activation steps before using each one for the first time. 
If you think you’d like a briefing in the future, but not now, just toggle it off. If you want to permanently disable a Flash Briefing skill, you’ll need to head over to the Skills section in the app and then tap Your Skills.  Find the skill you want to disable and then tap Disable Skill. You don’t delete the skill, which makes sense since nothing installs on your Alexa device.
You can create a flash briefing skill if you own, or have the right to distribute, original text or audio content that updates frequently. You should understand web technologies and have the ability to configure HTTPS, RSS and/or JSON content. The voice interactions for a flash briefing skill are defined by Amazon, but you must be able edit the format of your content so that the flash briefing Skill API can understand it.
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.

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.
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.
Like all AI devices that use National Language Processing or NLP, Alexa does not understand all voices easily. But she learns to understand her people over time. She does, however, require people to speak in simple terms, with appropriate pauses, and use specific word orders. There are many times when she will say "I'm sorry, I don't know the answer to that question." More than likely, she doesn't recognize a word order or misunderstood the question.
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