Traccar from source code

Hi community, anybody know where i can find a tutorial of how works Traccar from the sources code in server side? thanks to All.

https://www.traccar.org/build/

Thanks a lot for answer me Anton, but i means a tutorial that explains in sources code What do Class by Class, Are you understanding now??

We don't have class by class explanation, but here's the overall architecture:

https://www.traccar.org/architecture/

Ok have a good day.