I´ve just found out about Marugoto after 1.5 years of learning Japanese and going through the whole of JFBP (Japanese for Busy People).
After JFBP I started with Tobira but I found myself extremely lacking when it came to the active side of communication. The website allows me to test knowledge in an interactive setting, so I think I´m going to revise/supplement my further learning with the courses they offer.
The only problem I can see with the website is that as an absolute beginner typing the letters with the computer might be an issue, but then it shouldn´t be too much of a burden.
Also, you can take a test that will recommend you which course it right for you and the whole thing is free for self-studying! So even if you´re not sure whether it´s your level you still can give it a shot.