I hate to admit it, but one of my weaknesses is electronics, specifically semiconductors. I have been trying to analyze a circuit for about 3 hours, and I have been reading my electronics books (sedra and smith, and some general EE book) and my head is spinning. There are too many theoretical equations and circumstances on the operation of transistors, but not enough information on using them and designing with them. I get the idea of saturation and cutoff as switching, and active regions as small signal amplification, that is all easy, but when it comes to making the circuits and such, I get confused very fast. Does anyone know of a good guide to using NPN and PNP transistors? How about MOSFETs too? I really want to master these devices, but I feel like I should have been taught more basics before being flung into semiconductor physics and circuit models of the internal workings. I passed my microelectronics courses but I can't do much with the knowledge I gained from them. Even some very basic but complete guidelines on how to work with these devices would be more than helpful. Why do I sometimes see .4V drop and sometimes .2V drop? I just need a smaller beginning step to get good at this. Does anyone have some advice?