Anime is how I first started learning a bit of Japanese. It is helpful to hear the pronunciations and you do pick up some vocabulary, but without lessons in grammar it is hard to string a sentence together. If you really want to speak the language, take some kind of course or lesson.

Depending on which language subtitles you want, certain shows may not be available to you. I do not know about Swedish, but there is a wide variety of shows and movies subbed in english. As for the level, I do not know.