I purchased this book for a friend who was new to the internet, but I couldn't resist cracking it open. The book is layed out in a very clear, concise format, if you're interested in a function of Yahoo!, there is probably a chapter devoted to it. I was amazed at the versatility of the site...I used the free email, messenger and companion, but had no idea that there was so much more to do on Yahoo!. I love Chess, now I can play online. I love getting up-to-date sports scores, now I can get them through Yahoo!. I love to buy through my computer, now I can comparison shop from a single web site, all through Yahoo! Shopping. If you want to save time and find out everything you can do with your computer, then this book is an excellent way to learn.