I am a little weak in analog circuits even though electronics is my subject (Engineering course). Transistor is like a Pandora box to me. Last day I read a question about how to use transistor as switch in this site. It made complete sense to me. That gave me confidence to learn more about transistors. I want learn deep about that now. Deep enough so that I can even do analysis myself without referring any textbooks. So please explain me about transistor models in plain English.
I know what transistor is. What I dont know is about its models for circuit design like hybrid model, small signal model etc. I dont what equations (I got books for that). Tell something in plain language.
EDIT: Explain about Small signal model.