I think dramas are better to use for studying Japanese. because, in some of resent animes, there are too many anime-slungs in their conversation. It may make you misunderstand the meaning of words. But if you are a anime fan, it will be still helpful for you.

I think it is good way to use Anime and Dramas. And I think another good way is to listen Japanese music and Japanese news. News always broadcast real life. so, maybe you will see lots of difficult words. But when you can understand these words' meaning, your Japanese also improve. I hope so.

dorama would be better, but anime has colloquial speach. just carefull with anime, do not use everything in rteal life

Would you explain more details about your question? If you do it so, I'll know what you wanted to ask Japanese like me.