I remember this...yeah, it was a fun feeling. Congratulations!
Do Katakana, and then a few grammar things, start on Kanji. First 10 are the easiest Kanji, if you can get them with ease, check out the next 10. Chances are within 2 days you'll memorize them, and from there...well, can you stop?
I got the first 50 down and I have to say if you can get Hiragana down easy, Kanji is fine. Just take it niiice and slooow.