G mail is a google login account.Google provide many online services. First of all when you try to start an android phone it ask for a account where said account would be G-mail account. If you want to download any apps for your android from play store you will be asked for G mail account to be Login first. you can follows few steps to Create An Account.
I am showing Images in This article so you can easily go to these steps and create a new g mail account.
Now click create account marked by red outline in this image. you will be asked for two choices.
You can choose any one option from "For myself" or "To manage my business". You will be continue to next page.
It will be shown like the 2nd Image i am showing here.
You will get an OTP on your said mobile Number as text massage.
Now verify your OTP and press Verify. Now you can Complete your profile that what is your GENDER, BIRTHDAY.You can also fill any other E mail as optional. Now press Next Button.You will Continue to last step you can skip this option.Now click the "i agree" Button after read the Privacy and Terms.
Congratulation you have all done. Enjoy all services of google Like You tube, Blogger, Google Drive, Google map, Play store, Google News and many more.
Thanks.