Working with the DOM.

I have a question about working with the DOM. I'm using Chrome.

So lets say we have a simple nav with anchor tags, like so

If I was in the DOM, how can I select each a tag individually so that I can add different text content to each a tag? so through the DOM, how can I change from what is above to something like that is below? I understand how to select one tag, or the first tag, but I don't understand how to reach the second one and edit it, or the third one and edit it and so on.

contact

about

login

register

thank you.