Here's my opinion on Dustin. I don't think they are scammers by any means. Like most guruish programs there is a lot of motivational stuff and prompting to action. I believe it is cheaper to read all of the Robert Kiyosaki Rich Dad books for that. If you are ready to go and have $5000 that you can easily afford AND you are interested in Philadelphia or Houston deeds, you could learn something. His cheaper stuff is worth it for basic stuff life tax sale dates and some forms. But it is mostly trying to get you invest in many states. Telling you you can have financial freedom by doing this. I do know of one guy that does this and does very well. But here's the thing about tax sales. Every state is so very much different with every county with slight differences. It is not possible for anyone to teach you all areas and the how-tos of each. You have to learn that yourself by reading the county website. In my opinion, one should start in his own area, if possible. Like Florida, in your case. Even with all that online bullcrap, I think you could find a mentor of this site to help you and learn more for less.
Dustin's cleaned up a bit but I used to say that if this stoner could do it, so could I (I know, I shouldn't have said that). And I did with tax liens but not so much with deeds.
This is not a recommendation or advice, just letting you know about this. The guy that used to take people on their Houston quit Dustin and now has a facebook page, Tax Liens & Deeds and Beyond. He is organizing a trip to Houston for free to train people. The teachings free, you have to pay for airfare and hotel, I'm assuming.
Hope that may have been worth two cents.