Welcome @dimitriost to the Fortran Discourse!
Fortran has suffered to be a dispersed galaxy. Sure, it’s better for everyone to add your efforts here!
There is no official group working on tutorials, all good wills are welcomed, it is rather self-organized but with some leaders. By opening this discussion, people that can help you to contribute will soon come here, welcome you and discuss about what can be done.
In the meanwhile, you can start reading: