It’s over an hour long, and I cover the fundamentals along with an app demonstration where I use Geolocation, Geofence and SMS to catch my cheating wife! ha.
Each lesson has a written version as well, so there’s probably somewhere around 10,000+ words total.
Here’s the course:
https://coursetro.com/courses/11/Getting-Started-with-Ionic-2-for-Beginners
And here’s a silly video of me demonstrating the app WifeAlert at the beginning: