1. Finish a session. Reach 6000-10000 words, generate a session summary, and add the summary to your initial prompt.
2. Before you start the next session (by posting the full updated initial prompt in a new conversation), come back here and click "Session +" for the scenario you used. Then, click Main/Co-Main/Friend on each character you used in the scenario. If it was a main character, click "Main", if it was one of the 1-4 friends, click "Friend" on that character, and if she was part of a co-main scenario... co-main.
Eventually, your character cards will fill, change colors, and glow. Something special happens when you reach 320 points with a character! That sounds like a lot, but learning a language takes a long time.
And finally, if you manage eight sessions in a single main-character story (that means one prompt that you've added eight summaries to) then you can click the star icon on both the main character and the related scenario. This will make them sparkle.