Hi, I am new to trains, I had a bit of trouble learning german signaling when playing TSW 6. Its hard to learn that and PZB at the same time. So to teach myself in a fun way I made a little flashcard/multiple-choice app. I have worked on it last 3 days, so I thought I would share it in case others find the signaling challenging too. Its open source so you can read the code, make changes and make it yourself. https://github.com/NikolaiVChr/TrainSignals It cover the most common stuff.