Complete Newbee – Access my work?

Hi,
i have just started using wordpress.org. Looks really good. Worked on it a lot a few days ago. But how do I access wordpress.org again and continue working on my website.
The website is not connected to my wordpress account yet so I can’t log in vie website.com/wp-admin.

I tried to start up via MAMP, but for some reason I can’t access the MySQL-server. Is that server connected to certain IP-address or is there something else I might need to do…

I’m thankful for all help you can give me…

A.