it's called kana, learn Katakana next and then the first 80 Kanji to get you started. Then I'd say move onto grammar, I would recommend the apps Dr Moku's Hiragana and Katakana to help you get all the kana memorized. Do you have any textbooks currently?

Kana is a main word for basic Japanese chars that includes Katakana and Hiragana But yes after your good with hiragana defiantly move on to Katakana. After I suggest learning vocab in basic kana fourm along side the Kanji for it. Such as the word ( to eat ) たべます = 食べます( in kanji fourm ). Just to lessen the strain of Kanji learning. Good Luck !

I also finished hiragana, that's already very good to read some japanese. Next thing to do is learning katakana which are used for words of foreign origin, like shower, and sports club. After that comes the difficult part: KANJI hehehe