How to add a 'link back to homepage button' in HTML?

I am trying to build my first blog webpage.

The code I wrote so far at the bottom of the question.

I wish it has a function when I click "my name" or "Home" it can turns to the very beginning main page. And when I click "Blog", it can link to the area where has picture or word contains.

However, so far my code does not have such function, instead, they just display as words (cannot click).

This is the template I tried to followed

And after comparing it, I find that I need to have href: / in order to make them as button. And also I realise their link is for example "https://www.personname.com/".

However, it makes me feels like that I should first has a personal webpage in order to put that link as a back to home page button. But...that is what I am doing, I am trying to build a webpage...

I tired add the code below and it links to a wrong position. :(

<a href="/">
                "Home"
                <span class="sr-only">(current)</span>
              </a>

I also tried to have a button feature, but it display as this grey trangle box in the picture and cannot click as well.

How can I fix this problem?

And below are the code I wrote so far