What is the html code for a link?

We know that this blog is not specialized in anything and so I am free to write this to see who can serve you.
What is the HTML code for a link?
<a href="http://www.kozmica.com/"> My blog </ a>
That produces this link: My Blog!
It's very simple but not all born knowing, I learned long ago because I needed.
So to make a link to another page either you have to do is replace the URL (address), which is the text I put in blue.
And to change the text that will put the link as you want before </ a> which is the green text.
Simple!
http://www.kozmica.com/2008/08/cul-es-el-cdigo-html-de-un-link_15.html