Get the book or check your Public Library. It's pretty good. Rewatch those James Bond movies too, and I'm not kidding !!!
I found my info mostly via old school detective work and cell phone records. The old school detective work means people skills and people contact, James Bond again. Ever work in a bar? Restuarant? Then you know people will talk if you get them going. Unbelievable info sourced this way. It's almost stupid as it can be so overlooked. Think James Bond. Hope this helps.
