okey. great! just what I want! Did You've got some good tutorial or guide on this?

I have now a fully working form with login connected to my users in my database. But still anyone can type in the url to any different page on my website and still see the content. How to provide people to see my other pages?

Hello.
I want to build a mobile web app with login. I want to just login once and then get a token. I want only those who have logged in to gain access to additional pages in the app. Can you please describe what you would do in my case? Thanks in advance!