1. You can earn credits for answering questions in the answer forum. 300 credits can be earned for each answer you post. You can only post 3 answers a day though. This is the easiest way to earn credit.2. You earn 10 credits for logging in. The first time you log in for the day you get 10 credits. If you log in again that day you will not get more credits. You can get 10 more credits the next day if you log in.3. You can earn credits for watching videos. I think you can earn either 3 or 5 credits for watching any of the tutor videos.4.You can also earn credits by inviting friends to join Brighstorm. I think how many credits you earn varies on hoe many people you invite.5. The first time you change your username you can also earn credits.6. You can earn credits by taking the ACT or SAT trial test.7. You may earn credits by purchasing any course from brightstorm.8. You can also earn credits by sharing Brighstorm through twitter, facebook, myspace etc.