The best for me was printing and sticking to the wall Katakana, Hiragana alphabet, plus 100 most common kanji, then everyday morning and evening I tried to memorize it and by doing this i learn 80% hiragana and katakana and about 50% Kanji. But you have to use it / utilize everyday eg. with somebody on Skype because you will forget it very quickly. It's hard to learn foreign language if you don't use it at least every other day.