Anyway, it says that person needs 2200 classes to learn Japanese, but I already learned about 20 different words. You need about 200 words for most basic understanding, so I think that in about 40 to 60 days, I will have somewhat decent understanding of Japanese (speaking, not writing those symbols of theirs).
With the technique of spaced repetition, it enables me to learn with less effort while achieving good results. Plus, all these brain and memory improving apps help too, as well as my understanding of which words I need to learn as priority.