If you are a gmail user, then iam sure you would have gone through gmail login problems which would be any of these two -
1. Forgot Gmail Password
2. Password Does not work

Here is a small tutorial on how to get started when you are in this kind of situation.

The first step you need to do is Visit this Cannot Access my Account Link

You will be given with the following options to continue :

To recover your Gmail password, please begin with these steps:
1. Visit our password recovery page.
2. Enter your username.
3. Click Submit.
If Gmail accepted your username, you’ll now see a CAPTCHA (letters in a distorted picture).

Once you enter your gmail username you will be asked for entering the confirmation code with the following screen which leads to “Password Assistance” asking you to answer the forgot password question you would have assigned while signup with a captcha confirmation code again.

If in case you dont remember the answer then you need to click on the link which says – “Change your password by sending an email to your secondary address” which would make gmail send you a new password to your secondary email.

Google will send you a email to the secondary email which contains a link to verify for password-reset.

This process makes you reset/recover your lost google mail passwords and make sure you can again login back to your email account.