The 5th edition introduced several pedagogical updates based on physics education research to improve clarity and flow: Amazon.com Conceptual Refinement
Inside each chapter are short "Checkpoint" questions. These are the most valuable questions in the book. They force you to spot conceptual errors before you touch math. Volume 2, Chapter 30 (Ampere's Law) has a checkpoint about a wire going through a cavity that trips 90% of students. Master those. The 5th edition introduced several pedagogical updates based
if you want to be challenged, are interested in competition physics, or prefer a rigorous, calculus-based foundation. Choose RHW (Walker) if you Where to find it? Volume 2, Chapter 30 (Ampere's Law) has a
Find a used paperback copy of Volume 2 (ISBN: 978-0471320579). It will cost you the equivalent of two pizzas. If you cannot afford that or need instant digital access for searchability (Ctrl+F for "Gauss"), then acquiring a scanned PDF from an open library archive is a pragmatic, though technically illegal, solution. Choose RHW (Walker) if you Where to find it