I am confused where to start from and how to create a project

Actually I am just starting the project and I am confused because when I cloned the repo, it is everything created before and when I created my own project I am totally blank how to do the things and also how to get the design from todomvc repo because there is no design for vanilla javascript, when I created new file on that existing project how i run the files in the existing project, kindly guide me so I started the project. I shall be very thankful to you if you giude me on this problem.