It's better to have Rabbi Cahn take you through it step by step as he wrote in his book.
Fwiw, I didn't take to the book that well initially, but once it hooked me I couldn't put it down.
I've lost count of how many copies I've given away. It's had that same effect of a lot of people.
I looked through it when it first came out and found it simply too loose with the prophecies.