Looking for classroom training in Polon fire systems, access control, Fibaro, Grentron

Welcome. I am new to the forum. I have a small question, are there any residential training courses still being run somewhere? I have very fond memories of the Satel training courses which took place before the pandemic, they gave me the basic knowledge which I could then build on. As I like to learn new things, I would like to improve my knowledge further, but I do not trust online training. Do you know anyone who provides classroom training? I'm mainly interested in fire systems, preferably polon, access control systems, fibaro and grenton, but as far as I know grenton provides classroom training. There may also be other topics. There is never enough knowledge.