Jquery与asp集成。 net mvc框架

How do I integrate jquery with mvc framework, i have created a sample application and i have the directories named app_data, Content, Controllers, Model, Views and many others . The controller folder contains All the controllers written in c#.So where should i write the jquery script, should i write it in layout.cshtml or in index.cshtml ? How do i integrate jquery with asp.net mvc framework.How do I integrate jquery with mvc framework, i