what do I have to learn more katakana,kanji or hiragana, and what is the most important?

Answer 1

well......
it's a little funny to be thinking that you only want to learn 1 of 3 commonly used "alphabets" in Japanese..

if you only know one and not the other two you will not get far at all. Though, if you are thinking in terms of how to start and what to prioritize, i would say start out with hiragana. elementary books will also have hiragana written over the kanji so that you have a phoenetic guide to reading it. However you will eventually have to learn kanji because of its many and common uses. If you don't learn kanji, you will hardly know how to read anything in Japanese at all past say a 3rd grade level.

katakana is mainly used for loan words. take that as you will.

Answer 2

If you really insist on ranking their importance, it would probably go hiragana, kanji, katakana.
Every Japanese word (minus place names and other words borrowed from English) can correctly be written hiragana. Although this would look extremely childish most Japanese could understand so long as a context was added (Japanese has many homonymns and kanji are essential in distinguishing these at times).
Moreover, your question makes no sense. Is it supposed to be "what do I have to do to learn...." or "why do I have to learn"? And it should be "which is the most imortant?" In the first case, you have no choice but to memorize. Learn hiragana and katakana first because it is impossible to study kanji without them (or at least not without hiragana). There are several programs you can download to study kanji like "Kanji Gold"

Answer 3

i agree w/ the person above

kanji is essential unfortunately, and you will need the second alphabet for foreign words

which is why it can get real tough learning japanese