Lets explore the contents of a project. The Accounts folder contains the Membership related forms. Most important being Login.aspx and Register.aspx. Forms Authentication is enabled by default.
In the Styles Folder there is Site.css.
Site.master is the Master Page.
First Let me take Site.master. I am editing the heading 'My ASP.NET Application' to 'Shalvin Content Mangement System' which is an H1.
Now I am selecting Default.aspx. I am editing the existing contents of the page to suit my project.