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If anyone is interested in what these transistor models are like, there's an excellent online course by Yannis Tsividis:
On the other hand, the commitment to a MOOC's schedule can help people stay focused on the course and see it through even if they lose interest at points.
For example: Coursera's NAND2Tetris class imposed a schedule that kept me on track, even when I 'didn't want' to work on it.
The same thing's happening again with their MOS transistor class . I never had a completely firm grasp on semiconductor basics in undergrad, and now I've got the motivation to go back and read through old notes, correct misunderstandings, and so on.