These are exclusive, for customers only. Your unit’s LINKS page includes the supplies lists (including an activity overview shortcut), book lists, custom-picked videos, resources, and more. We frequently go through hundreds of videos/websites/sources with each of our units to ensure we are providing as accurate, enjoyable, and up-to-date content as possible [we weed through a lot]. We also pre-screen for parental discretion, etc. We’ve prepared it all for you. All you need to do is click your unit title below when prompted by your guidebook! Quick tip: This is also great for viewing your supplies list when out shopping!