Download some Japanese textbooks and go through them in order. They cover important vocab and grammar and conjugation, and have exercises and worksheets if you get all the right versions. I have the Genki textbooks and the situational functional Japanese textbooks myself, I recommend those. You can get them on Zlib I believe. For Kanji practice use Kanji Tree or Wanikani.
If you have a local college or university that offers Japanese classes, those are your best option if you can afford it. They also often provide the occasional opportunity to travel to Japan for relatively cheap.
Download some Japanese textbooks and go through them in order. They cover important vocab and grammar and conjugation, and have exercises and worksheets if you get all the right versions. I have the Genki textbooks and the situational functional Japanese textbooks myself, I recommend those. You can get them on Zlib I believe. For Kanji practice use Kanji Tree or Wanikani.
If you have a local college or university that offers Japanese classes, those are your best option if you can afford it. They also often provide the occasional opportunity to travel to Japan for relatively cheap.