Well, you set up a schedule for hiragana and then katakana. Practice them for a while until you know it by heart. Then go back to the Japanese Lessons page and continue the rest of the lessons. Repeat one by one.
So, judging by your profile, you have not yet finished hiragana - you just hit a soft limit for new terms that can be introduced in one day (you can change this by going to Pace under the ... menu for the schedule), but there are still more new terms to learn (more hiragana).
Continue day by day to get through them, and when you fully learn the schedule, it'll recommend the next schedule for you to jump to (it'll be Katakana, which is most likely already on your dashboard, and then Japanese Basics after that).
