So I am confused about creating nested templates, I need help!

OK so here is my site structed

Wrapper

Header

Container

left-column

Page_Content

Right_column

footer

(left-column, page-content, right column are inside container. Add everthing is inside wrapper)

OK so whats bugging me is that, left-column will have links like:

HTML
CSS
ASP

these will display on everypage unless I change it. So If someone clicks HTML,they will be redirected to HTML.cshtml. Now for the HTML.cshtml it will have its own template _HTML (_HTML, will be running from the MainLayout) However for the _HTML page, I do not want the links:

HTML
CSS
ASP

I want links to do with HTML, e.g. Paragraphs etc. How can I change this, but keep the site layout same?

if you don't undertstand me, then this should help:

http://www.w3schools.com/

When you click on HTML, watch how the links on the left change to all HTML topics, but the design is still the same.