Is an introductory physics course necessary?? I'm learning physics in my spare time, however, I hope to be professional in physics, so I took a look at many universities physics curricula and found that students must take an introductory general physics course at some universities, and at other universities students never take such a course. I've read the mechanics part of Tipler's Physics for scientists and engineers. And I don't know if I should continue reading it or ignore the rest of it and begin reading a CM text such as Taylor's and an E&M text such as Purcell's. So what should I do??? Is reading an introductory physics textbook necessary for me and so I have to reread Tipler's completely?? Or Should I ignore introductory physics and begin reading a CM textbook such as Taylor's? For maths, I've read a textbook that covers Calc I & II and Differential Equations.