Set up GMail on an Android Device
Your version of GMail may appear different from that in the attached pictures. However, the process involved should be fundamentally similar. Note that this process adds your Connect account to your Android phone for multiple services. There is no way to use Google Services (Calendar, Email, etc.) with the built-in Android apps without adding it system-wide.
If you have any questions, please submit a help request.
First, find the GMail app on your phone and open it up.