If you want the convenience of a digital copy without breaking the law or risking your computer, here are the official channels for :
While there is no fictional story about the book, John R. Taylor's Mecánica Clásica
Students struggle most in Chapters 6 and 7. If you have the PDF, print out the Euler-Lagrange derivation and tape it to your wall. Taylor argues that understanding the calculus of variations is the transition from student to physicist.
