JapanesePod101
This portal provides you free podcast lessons and also has an excellent YouTube channel with hours of free content.
Multibhashi
One of the best online sources to learn Japanese as live expert tutors teach you.
Easy Languages:
Easy Languages channel offers you a lot of local culture and context. There is an added advantage in the Easy Language series, the hosts go out into the streets of Japan and interview the people they meet there. It is a good way to hear the way people really speak the language, pick up useful conversational phrases, and by this, you can practice your listening comprehension.
Japanese Ammo with Misa
Misa is one of the YouTube channels that has a lot of Japanese teachers on. Their lessons are thorough and they will provide you a lot of examples so you can really come to grasp tightly Japanese grammar.
Learn Japanese Pod
This YouTube channel provides you free language podcast with content that is available for free on YouTube.
CHOP
In addition to the language, if you are interested in learning a bit about Japanese humor, this channel would be the right choice for you. It uses humor to teach Japanese learners with short phrases and grammar structures and it will be interesting to look into Japanese culture.
That Japanese Man Yuta
Japanese Man Yuta is a vlogger who conducts interviews with native Japanese speakers on the streets of Japan. The videos cover a wide range of topics including dubbed cartoons and even other videos that teach to Japanese. The videos all have English subtitles and it will be a great way to work on listening comprehension.
Puni Puni Japan
Puni Puni teaches Japanese through a number of different videos that feature phrases, JLPT exam practice, or themed topics. Many of the videos feature have adorable animations.
Tofugu
These are the creators of two popular courses for learning Japanese Textfugu and Wanikani. Their blog is also an incredible resource with thorough posts on different aspects of the Japanese language.
Learn with Oliver
Learn with Oliver is an online flashcard tool that will make you learn Japanese words or phrases and it offers several ways to test yourself on the content. You will receive their email newsletters in your inbox each day.
Duolingo
It is a popular language-learning app that introduces you to both Japanese vocabulary and grammar. This platform is gamified and because it will be fun to learn and easy to maintain your daily streaks.
Memrise or Anki: Anki
Memrise is a flashcard system that you can use to create your own Japanese vocabulary or download those already created by other users. Anki is the free app and browser version of Memrise.