How to Use: These books are great for learning English. You can study them at your own pace, reading through the content in each volume. Notice that Volume 1 lacks thumb - tab labels, but it doesn't affect the learning process. Just flip through the pages and absorb the knowledge. Things to Note: Since the covers, spines, and pastedowns are soiled and stained, handle the books with care to avoid further damage. The marks from the previous owner on the free - endpapers are just a part of the book's history and won't impact your use. Maintenance Tips: Keep the books in a dry and clean place. You can use a soft cloth to gently wipe the covers if they get a bit dirty. Avoid bending the pages too much to keep the text blocks in good shape.