Hi there and welcome
If you wish to add a second Gmail account, go to gmail (www.gmail.com)
Sign into your normal account, then click on the circle at the top right with your initial in it and click on Add Account
Setup the second account there and you can then use it
If you have any problems, or would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.
You then click on the circle top right and can click on it
Or sign out of your current account in the same location, then sign in with the second account.