
How can I finally understand how to use signals?
I am doing the campaign right now, because a lot of people told me to do that when I asked about tips on my first post here.
The campaign is good, I have fun but I also try to build extra things to see if I really understand this building system or not.
I thought I understand how to put signals put no I didn't.
Why the train doesn't stop here? Please help me and explain