Displaying data from module class on live site

Hello!

I am very new to Kentico and I got myself stuck on something that probably has a really simple solution.

I have a custom module, which has a class. I can see/add/edit records from that class in the portal. What I am trying to do is show those records on the site as well (for example, on the home page. so not portal). Here I am having some issues because:

I noticed that for displaying list/records people usually use repeaters. I managed to make a data source web part in order to feed the information to the repeater, but I am having issues making the transformation (which seems to be mandatory).

What I've been looking at: https://docs.kentico.com/display/K9/Writing+transformations On that page it says that you can only do transformations for page types and custom tables (I understand that custom tables are something completely different from custom modules). And, if I try and make a transformation on my site using the portal, I only get the possibility to select page types or custom tables, not custom modules classes.

However, here: https://docs.kentico.com/display/K9/Loading+data+using+custom+queries Says these steps have to be applied for loading data even if the data comes from custom modules classes, and step 3 is to assign transformation. By this I understand that there must be a way to make a transformation for custom modules classes.

Am I missing something? Am I looking at this the wrong way?

Thank you for your time.