This book has plenty of information from a reliable source. I've gotten good ideas about care and difficulty. It's a pocket guide so the small dimensions are a nice touch when taking the book with you. This is a great one to take into the LFS with you as a source of instant research on what's available. One of the shops I go to has this on the shelf and I grab it every time I go it to see what it says about a particular coral or shrimp etc.