You can refer to the Alloy MVC Template to set the landing or start page. https://github.com/episerver/alloy-mvc-template
Please refer to my blog post and instead of Start Page use your page name
Can you please clarify a bit more, what you are trying to achieve?
I assume you have an empty website and you want to create new Page Types such as Landing Page or Standard Page.
You need to look at the following section in Episerver documentation and follow it step by step (if you are new)
Note: Alloy MVC is also a very good example website
how to add drag and drop option in (empty) not an alloy mvc
Use ContentArea or ContentReference Property on your page and it will allow you to drag and drop any block or page
What do you want to drag and drop? And where?
How to add Landing Page or Standard page in Empty