Now we have two scenarios here.
1) Web Designing according to your question
2) MVC as you mentioned it too.
So let me explain both
You are a beginner as you said, so you must start learning the basics to learn what a webpage is made of?
For this purpose you need to learn HTML, CSS in start and then jquery/javascript to enhance the quality and feel of the webpages you design.
I would refer you to learn it from
W3schools
When you ll have at least the how know of design, then you go to the next step called Development.
Now in development you need to learn the architecture and frameworks.
According to you MVC is prefered.
We welcome you to the family with respect.
You ll find
This very helpful for learning MVC.
But make sure you understand the basic architecture of asp.net first.
Wish you a best of luck and a good career ahead.