How to load comments in a post details view?

i have been trying for over 2 months now but to no avail on how to load the comments with a specific blog post. For example: when you go to the index page of the blog, you will see the list of all blogpost... Now, when you click on a particular one, it will go to the details page. How do you, load the comments of that post to go together with the post in the details view and how to include a textbox underneath for new comment and not a new view page for new comment. Please, help me because at this point i have four things i can't get my head on and begining to loose interest in visual studio