This page helped me a lot when I started out with transistors: BJT H
Ok, I'm about halfway down the first page of that link and already things are making sense. Things that I first tried to understand about transistors when I was 13 in 1969.
That link ought to be Transistors 101 for everyone.
"I have a question about transistors...."
"Wait, have you read Transistors 101?"
"No, but...."
"Uhuh.... no "buts".... read it then ask if you still need to"