Create an internal link

Hi all, this is my first post on this community

So I try to create an internal link in my ionic app and I met different problems about it.

Can you explain what I must do to create an internal link for example if i press a link the app must change scene or view and return another page of this app.

I just see the script of ionic and I create a state into app.js, I created the controller into controller.js, I created the page with the correct name and I create this link so… I cannot paste here my code because I just see that in the preview the code is trasformed in text…

Can you help me?

Thank to all reply