Learning RxJava (for Android) by example
A presentation aimed at beginners who have heard about RxJava and want to see what all the fuss is about.
Although there are various ways to get basic audio working on your page, most people are not using the <audio> element to its full capacity, and I think they are missing out.
Since Google Play Services took much of the thunder away from the Google APIs SDK targets, SDK Add-ons have fallen a bit out of the mainstream thought of Android developers. However, if you are an OEM of an Android-based product (especially one that may not be in the consumer space), then SDK Add-ons are worth another look.