These books are great for learning EKG interpretation. To use them, start by reading through the introduction to understand the basic concepts. Then, go through each chapter carefully, taking notes on important points. When you come across examples, try to solve them on your own before checking the solutions. As you read, you can highlight key information in the books, but be careful not to overdo it as it might make the text hard to read later. Store the books in a dry place away from direct sunlight to prevent the pages from yellowing. If you want to carry them around, use a book cover to protect them from scratches and dirt. Keep the bindings in good shape by not forcing the books open too wide.