How to recover forgotten password of Google

You have a Google account and if it is not opening and error message is that "Username or password incorrect" then you need to reset your password and then you will be able to use your google account.
without Doing this your all accounts like youtube, Gmail,orkut,maps,Google+. this all will not be blocked till you reset your account . after you reset your Google account you will be able to use all this services which are provided by google.
To reset your Google account password first go to www.google.com,
then click on sign in as show by orange square in picture below

Now click on need help as shown in below picture-

Now click on any of the problem which you are facing while signing in...

after clicking on continue type your email address and then click on continue...

Now if you know your any old password then type it or just click on i don't know...

now this is confirmation window which ask you to confirm your detail and than click continue...

after all of this you will receive a new password reset link to your email address which you have provided when you created account on Google.

This is the simplest way to reset your password of google account.