I would deffinately suggest the GemTools Pro software. It has all the information the book has and is easier to sort the gems by the gem separator. Just put in your findings and hit query and it narrows the list of possibles. You may want to invest in a few known stones to confirm you’re testing them correctly and your findings match the books. Cheaper lab created stones should work fine for most tests except inclusions. Inclusions are also a big part of the identification but 4 or 5 different stones will help you hone your skills and doing the testing correctly. I’m just getting started myself and found the refractometer I bought was out of calibration by using some known stones.