I just discovered retool and it looks awesome.
However, I am struggling to understand how to add different pages connected to different navigation items. I have menu items and each of them should have a different page. I would have expected that once I click on a menu item, it changes the content of the page so i can start build it 
It might be a stupid quesiton, but how do i do this?
@mmaestrini , welcome,
Retool apps are single page applications, you can't add extra pages.
Each functionality gets it's own app.
You can link to other applications using button event handlers (navigate to app).
I've used the "Tabbed Container" to be able to add some extra pages/sections to separate some data fields. But I'm not sure if you want to use this if the functionality is very different or if it's using lots of other queries and functions. Maybe it might slow down overall app performance?
Hey @mmaestrini! We just went live with our Multipage Beta which I think could help alot, read more here!
Hey @mmaestrini, I am circling back with a quick refresher to keep this thread current. Since December 2024, Retool apps now support multiple pages by default! 
Retool apps now support multiple pages by default | Retool Docs
Retool apps tutorial: Configure multiple pages | Retool Docs
Many of you have probably used this already. Let me know if you have any other questions about this, happy to help! 