Google introduced the Helpouts service, a special version of live video Hangouts specifically intended for instruction and guides, back in November of 2013. The Android app followed shortly thereafter, allowing users to access paid and screened experts for a variety of skilled or specialized tutorials. Apparently it hasn't been as popular as Google had hoped: the company has informed users that the service will be shutting down on April 20th.
Google Helpouts Is Shutting Down In April 2015, Android App Already Removed From The Play Store was written by the awesome team at Android Police.