lucky,
Dan Brown's books got me into this kinda thing as well. Even though the stories themselves are fiction, the fascinating historical background regarding the illuminati, prieur de scion and symbolism lit a fire and kick started my research/journey into the world of secret societies and their affect on the history of the world and how they affect us at the present time. I had no idea of these things as well.
During the course of my research, many, many ,many things clicked in my head and made sooo much sense. The information is overwhelming and if you decide to keep digging away you will see the pieces of the puzzle coming together. You will see the big picture. I'll tell you one thing, it makes a helluva lot more sense than the stuff we've been taught thoughout the yrs as a JW. Ironically though, I do believe that my previous JW beliefs actually helped me grasp these concepts much easier. hehe I guess after all of the mental gymnastics that we had to do with trying to grasp the meaning of Isaiah, Daniel and Revelation through the publications, this is a piece of cake.
The beauty of this is there is no absolute DOCTRINE regarding what is true and what is false with all the info out there. I'm sure you will find yourself agreeing with some things and disagreeing with some of the other things. But one thing is for sure, there is something HUGE going on!
Keep digging and happy trails, lucky! You won't be disappointed at what you discover!