Also, you're not 3 years old, so your brain is not plastic anymore and you won't absorb language by pure osmosis. On the other hand, you are able to understand explanations and comprehend context through intellect.
Read a grammar guide (like Tae Kim's), do your Anki reviews every day, and read and listen a lot through games, anime, manga, what have you (and add words to Anki), and if your effort is constant, in a few years (or less?!) you'll have a more or less fluent comprehension level (speaking is another matter entirely, though you do end up acquiring it to some degree eventually).
And don't ever pay money for knowledge that is available for free (which is all you need). Learning programs and textbooks will never get you to a level where you can pick up a game and play it understanding everything it says, if they can even get you to understanding any text outside of a stiff textbook format, that is. Better get exposed to what real Japanese looks like from the very start instead of being lied to then being afraid of reading anything else because you can't understand it.