Hi!
i'm trying to learn japanese by myself with self teaching books and CD. I was wondering if anyone succeeded with that method. Thanks.

Yes of course they do all the time and not only Japanese language.Qunli.

Yes, but unless your commit yourself religiously it will not work. In the end, I find that immersion is the best method to learn any language.

I mean, self teaching isn't bad but it also gives you a false sense of security. You may think you know something, when you really don't. The truth of the matter is, you can never truly know if you *learned* a language until you put it into practice (and are able to express yourself in an understandable manner). This is simply impossible if you're doing a one man show. And even if you're really smart and happen to get some of it right, without constant usage you will quickly forget.

My suggestion for you would be to make a couple native Japanese speaking friends and practice with them. You'll learn faster plus it's free

Learning foreign language like Japanese is fun because it makes you more aware of how your own brain works. Like the "mystery of translation" the way that actual act of translating, example one line from dating-sim is not done by my conscious mind, but instead by a deeper place inside my brain. I mentally place a word or sentence that I want to translate into a special place in my mind -- ding! -- a few seconds later I have translation I need, just like cooking something in the microwave. I'm also amazed at this way human brain can identify the subtleties of different human voices. I'm currently watching "A Certain Scientific Railgun", enjoying antics of that strong yuri character Kuroko. That first time I heard her character speak I knew instantly that she was voiced by talented seiyu Satomi Arai, who also played a kind-hearted ninja-maid from Code Geass. What wonderful biological organ is our human brain!Qunli.

I am trying to learn Japanese Language from online.I get some websites...hope it will help me to learn Japanese Language.

Watching anime or other japanese video (with subtitles) might be a good idea for people who miss real hearing and speaking experience. It will help you get a bit of basic vocabluary and will teach you correct pronunciation of some common words and phrases. But to make this work, you should learn basic grammar and phonetics first, otherwise you'll have hard time splitting the japaneese speech into words, and words into syllables...
But that is nowhere near enough. To be able to speak japanese, you should really try to read and write it. A lot of important knowledge and skills can be obtained that way.