I go on "Edit Profile":

Once I'm in my profile, I scroll down to "Password", and I'll be able to change it by clicking on "Change your password" :

This is where I'll be redirected to : 

By clicking on "Send", an e-mail will be sent to me. 

If I can't find the email in my inbox, I check my Spam/Junk mail. Once I find the mail I click on "Reset my password".

Once my new password has been registered, I login to the site with my new information.