Visit this blog.
enjoy YouTube videos of Japanese learning and japan sightseeing.
There are tons. You can try www.google.com and type in "Japanese free lessons". I am sure you will find your answers.
Frankly, I don't think you'd be able to find such a website like that. Its great that you're willing to commit time into learning Japanese but, not many people are willing to commit time into making a website, teaching people to speak, read, and write Japanese, both literately and fluently.
On top of that for free. That's too much to ask from an individual. It'd be great if you could find a website as such, but good luck with that.
If not free, Rosetta Stone is pretty good.