Here are PDF versions of some of the the reference sheets in the COMD studio, if you want to print your own copies, or just have them in a digital format:
Printing, Paper, and Risograph
What’s A Risograph? (Info poster)
Paper Sizes and Formats (Reference Poster)
Paper Weights and Types (Reference Poster)
How Do I Make A Book? (Digital booklet)
Let’s Make A Fold + Staple Book (Digital Booklet)
What’s Wrong With My Booklet? Common mistakes printing folding books at school.
Grayscale, Bitmap, Halftone: Designing for Black + White Printers and Copiers (Booklet)
1-Sheet Booklets + Zines (printable for folding, 11×17)
1-Sheet Booklets + Zines (printable for folding, 11×17 black + white)
1-Sheet Booklets + Zines (non-foldable poster version, 11×17)
Studio + Equipment
Software
Shortcuts + Tools: Illustrator
Illustrator Tips: Lines & Paths
Illustrator: Modifying Letterforms