Once inside the Site Manager click on the Web Editor button on the left of the page. To the right of the page you will see your Navigation Menu has begun to be created. To begin, lets start with your "Welcome" page. Follow the row over to the right and click on the "page editor" icon. You can begin editing your first page. If you still see your demo text on the page just highlight it all and click delete. Once you have typed your own text click "save" at the bottom of the page. Your information will automatically be updated and you can now preview your site to see your work!