Found this article over at Droid Life
complete with video for the HTC One showing a 20+ beginners tips and tricks. Very useful indeed.
Here's the video:
20+ Tips and Tricks for the HTC One - YouTube
Having issues with Amazon App store? There is a solution discovered at XDA that requires a previous Amazon .apk.
Discovered more tips and tricks for the HTC One. Also handy for beginners. This article is very good.
35 HTC One tips and tricks - Opinion - Trusted Reviews