After you get past the components, some computer architecture will do you good. See eg https://www.coursera.org/course/comparch https://www.coursera.org/course/

After you get past the components, some computer architecture will do you good. See eg https://www.coursera.org/course/comparch https://www.coursera.org/course/comparch. There's also the classic Hennessy & Patterson book.