1. Collect hairs and fibers from your house & bring next week.
2. Go to link below and Play the "Case One: Rookie Training" Choose "Play as a Guest" Choose the "Toxicology Lab" WARNING: Don't watch the video clips if you don't want to see gross stuff.
I had to use CHROME as my browser and enable flash. It was a pain, so if the game doesn't work, don't worry about it.