What is visualforce?
Visualforce is a markup language that allows defining user interface components in Salesforce. This is a very interesting tool which runs o force.com platform. By using page layouts, we can easily configure the User interface. But by using visualforce pages, you can develop your own customized user interface.
Here in Visualforce Tutorial, I am providing information about, how to work with visualforce pages. Hope this will help you to understand basic of visualforce pages.
Above are the few examples to understand visual force basics. To learn more about visualforce pagesee salesforce vf guide