Create a page like the invision community guide

[Cinquezerocinque]

Hello, I would like to create a page like the guide from invision community (https://invisioncommunity.com/4guides), but I'm not much into invision.
Basically mine should be a guide page for whoever needs it, that always has the left side with the categories name and below it every post name that sends you to the guide post, maintaining the left side with the list.
I just want to recreate the guide from invision community with my guide posts, nothing more actually. Can somebody help? I'm really struggling with this one, since I always worked on others CMS..

[opentype]

It’s a Pages database. Have you worked with that before?

There are template sets for Pages databases on the Marketplace with a similar look: https://invisioncommunity.com/files/file/8663-pages-superdocs/