This book is a great start and has a lot of pertinent information and well researched information.
The Lost Dutchman Mine of Jacob Waltz, Part 1: The Golden Dream
There are other good books out there, however something important to learn is where the information came from. Some of the main sources i will list below, and some people really believe in some of them, while others believe in parts of all, some believe in parts of all that match whatever theories they may have. The point being, a lot of the information is old, and impossible to verify, and you will find people truly believing in one idea while others call it impossible and totally believe in another theory.
You have the Holmes camp (based on the idea that Holmes told Waltz a lot of information and gave clues to the mine (or cache) as he was dying
The Petrasch camp (based on the ideas told to Julia Thomas and Rhiney Petrasch in the months leading up his death, as they cared for him and tried to help him)
The Bark Notes (based on Jim Barks notes over the course of his life and his searches for the mine.
Indian Stories
After that you have lots of groups of more modern searchers, all with their own ideas, found mines or caches, uncovered mines claiming to be the LDM, and more.
Most books are based on combinations of the above groups, with the one i listed being a blend of the holmes camp, bark notes and modern searches. The sims ely book listed above is based on the bark notes, as were a lot of LDM books.
The hardest part is, if anyone really knows, they arent telling, things have been found, sometimes there are quiet public whispers that are nearly impossible to verify, and from there it just gets even more complicated.
Its a great way to battle dementia, trying to keep it all together. Earn your LDM brain wrinkles!
As has been publicly stated by many, and recalled by the author, the book below should be avoided, as it contains non factual information. The person who gave the information is closely connected to the holmes camp clues, for what its worth.
The Bible on the Lost Dutchman Gold Mine and Jacob Waltz: A Pioneer History of the Gold Rush