It has some good info and pics, but is has a lot of misguided info as well - and it has lead to the purchase of sharks by people who aren't equipped to provide a healthy life for them. Mostly it lies in the tank size requirements by species. After keeping many of the species discussed in the book, I would never suggest using it as a guideline for shark husbandry.
The best printed source for actual shark husbandry is the Elasmobranch Husbandry Manual. Real world info from real experts compiled of decades of 1st hand experience.