Android

Download an Android wallet from the Google Playstore. Use the very nice coinomi wallet, with support for multiple electronic currencies. 

WARNING: In July 2017 you need to migrate all your coins to the coinomi wallet, as the original Android wallet is no longer maintained!

Earlier you could choose either the original Android wallet which has a direct link to redeem coins from the tutor-web, or the coinomi wallet, but the former is no longer supported.