To login to WordPress, visit your website url with "/wp-admin" added to the end. (Example: www.url.com/wp-admin) and enter your username/password. If you have lost your password, simply click the “lost your password?” link below the fields. WordPress will then send you an email with a link to reset your password (if you don't see it immediately, be sure to also check your junk/spam folder). Just follow the link to set your new password, and login as you normally would.