Yes, i know the book, and it isn't worth it. This ex-marine just gives general advice on how he has aquired some language skills in turkish for instance. Before he was assigend on a mission, he was watching cartoons, read children books and the like, took a notebook with him everywhere, and wrote down new words. He became basically functional in some of the languages he needed, but only to that degree he really needed it to successfuly complete his missions.
There is nothing in there, you could not also find in any guide - or website for that matter, that is titled "target language all the way." Which would translate to AJATT for some on here.
I found the other link quite interesting. It's only the heading that is talking about 1 hour, whereas the rest of the article is talking about 3 to 9 months. I found the part interesting, where that guy breaks down the language. I say, it might be an easy task for him, but for the average learner? Nobody would start to approach a language in that way, without background knowledge how to speed up the language aquiring process.
So, the article is quite interesting, but books that say "Become fluent if you learn 1 hour a day," also to be found on Amazon, are bogus at best. And better left on the shelf.