Find info and help for the CE (alt fs3)

Hi all together I hope I’m right here …. so the following I’m 23 years old and my job wish since I’m 8 years old is to drive a 40 ton. Some will say you have a hit or anything else .. but I don’t care At the moment I’m hired as a driver at GLS ( old German Parcel ) and drive a sprinter. ( admitted to 3.5 ton ) Now my question How and where above all, I start to get the appearance CE so that I can also commercially n There are so many rumors and one says that and the other says that … now I hope to get an answer here. What do I need for dangerous goods classes and what do I have to show in general? I have heard that there are forwarding agencies to train the young novices with the requirement that you stay with them and pay the costs for the training. Is this really true? Personally I think h old if I finance the bill from my own pocket, many companies could say you are too young, no experience etc … the sprinter who is also 5 meters long is not to be compared with a tractor train or a hoist train …. so please give me tips like me the best instead =) Greeting Steffen