I just installed MAMP and Silverstripe on my IMAC. Upon typing httP://localhost:8888/, I came to the screen which says 'Welcome to SilverStripe! This is the default homepage. You can edit this page by opening the CMS. You can now access the developer documentation, or begin the tutorials.' When I click on the hyperlinked 'CMS' and enter the email and password that I input during install it receive the error message of 'That doesn't seem to be the right e-mail address or password. Please try again.'

So my question is how do I access and change my email and password so I can open the CMS and begin creating my website. Any ideas?

Temporary hard code a member by adding the following line to your mysite/_config.php file. This will at least allow you to access the cms.

Security::setDefaultAdmin('admin', 'password');

Then once you use those details to get in you can reset your password in Profile link in the bottom right