Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Outdated and no color pictures

This book was written in 2003. Many of the sites listed in the book are either closed or have changed ownership. One mine has changed owners twice since the book was written, and now charges $30 a day, not $10 a day, to dig your own dirt and use the sluices. Beware those changes, and know that there are no color pictures in this book, but there is still some useful information in the book.