[Hansuke]

Well i think anime is pretty cool and also you can get many kind of ideas of japanese culture and also learn a little japanese.
In my case i think its adicitive when you dont have anything else to do.
For example when im on vacations i spend like 5 o 6 hours watching anime (obviously if i dont have anything to do)
So it depends but at list you should watch one or two animes

Oh I see. I will try my best to watch an anime, and I'll narrow it to one episode per day.

You can use anime/drama, but if you really want to get something out of it (other than just enjoyment) you should really try and approach it AS a learning tool. This can be hard to figure out, so I don't think your question is silly at all.

Several approaches I've used in the past:

Try and find something available with both subs and just the raw audio (or cover the subs). Pick something you are likely to understand- I find kids anime (like doraemon, yotsubato, azumanga daioh) and daily-life drama most useful for me as the language is more straight forward and relevant to me.

Watch it without subs and try and answer a few basic questions; what happens, why, who are the characters, what's the theme, what kind of language do the various characters use etc. Watch it again with the subs. How was your comprehension?

Try and pick up on any words you know and the sentences they are used in. Try and listen for any words that are used frequently that you ~don't know~. Aim to learn about 8 new words.

Consider, is what you're listening to something you could actually use in Real Life? Is it polite? Is it overly formal/old-fashioned/technical/childish/masculine/feminine for you to use? Is some of it 'nonsense' language? What are the words and forms that make it so? And bear in mind, in some anime/dramas there can be a fair bit of language that would be very weird to use in real life.

If cultural points of interest pop up, go and read a little about them. Subbers often put in some short explanation, but they might not bother, or they might be misinformed, or the anime might be misrepresentative. It's always worth following up on new information.

If you do all that, you won't get addicted because you'll be too busy learning. You could also swap about through different series' if you have them available, so you don't get too sucked into one story. It's when you just sit there, with the subs on, passively watching that you a) might find you're putting too much time into it and b) not ~learning~ anything so it's not actually doing much to help your Japanese.

And finally, anime and manga on the internet is almost all illegal. So do try and find a legitimate means of access. You can get DVD's on amazon, sometimes quite cheaply (i've seen anime feature films on there for less than £5) and i think Crunchyroll is legit, but someone else will have to verify that. Or you could do what I do and just shake any nearby otaku and see what falls out. :P

Thanks for the thorough reply! I really appreciate it. The tips you gave are really informative. I'll surely do what you said while watching the anime. I believe Detective Conan would be a perfect one, for episodes aren't usually related to each other, so it would be possible to watch one episode per day and learn/benefit from it without 'wasting' my time.