This is a very fundamental text and as such it is a excellent basis for further study in the subjects of mechanics and physics.  You would be surprised how most people especially the younger generation, though clearly comfortable with current technology especially the use of electronic devices, cannot grasp the simple concept of a lever arm or why you need to understand geometry, trig functions, basic physical properties of fluids, etc...  Anyway, I liked it and I keep it handy on my desk for occasions when simple examples are required for clarification purposes.  A good follow on text is "Making Things Move" by Dustyn Roberts, also well written for the layman, student or hobbyist.