I see good example to learn and that is petclinic. Do we have step by step guide or pdf to do that by watching or reading?
PetClinic source code is available here for studying: https://github.com/Haulmont/jmix-petclinic-online-demo
There is no step-by-step guide for PetClinic. You can view all latest tutorials on the Jmix YouTube channel: https://www.youtube.com/channel/UCEmWc8OwhgHnAV7vVVxtglQ