Japanese Language

I think I can understand +- 100 kanji already, and that's the simplest one.
Maybe I can do it after all.

I understand, like, weeaboo-level Japanese from anime + playing visual novels with a machine translator. Remembering kanji is the hardest part for me; you really have to just push yourself to do rote memorization, but if you can just look it up online it's too easy to do that instead. I get really happy when I see one of the dozen or so kanji I can understand =P
I bought Influent in the winter sale to help practice Japanese, but I haven't gotten a chance to play it yet, so I can't say whether it's good or not.

I think after kanji, the big one is vocabulary (combination of kanji) to know the meaning.
Then grammar.

Kanji>Vocab>Grammar

If you take formal lessons then you would be surprised how much you can learn in a short time. Informally or with self-study it is much harder, but you can still come to a working knowledge.

I'm studying japanese by 2 years now and is way more harder than english so I think it's better enter in a school. Don't worry about your age, it's never late to learn something. I don't know if you use reddit but https://www.reddit.com/r/LearnJapanese/ is a good place to take off some doubts.

tofugu