getting to phpmyadmin with mamp

Try this localhost:8888/MAMP/?language=English

Click on phpMyAdmin tab and you have it.

If i go to localhost:8888/MAMP it gives me the MAMP screen, from which i can go to phpmadmin.

If MAMP has MySQL Server and Apache Server running.
You can go to phpMyAdmin via url http://localhost/phpMyAdmin/

On Windows pay attention to capital letters:

http://localhost/phpMyAdmin/