General Knowledge and Apparel Info:
Free access to books in the public domain.
Apparel manufacturing videos from Cotton Inc.
ABQ Fashion Incubator
Articles by professional pattern maker and apparel factory owner.
Pattern School Online
Articles by professional pattern maker specifically about working with stretch fabrics.
Geometry of the Fully Fashioned Sweater
Article by Sunil Puri about the mathematics of sweater specifications.
Dave Morrow Photography
Tutorial by professional photographer about using color theory in Photoshop. I’ve found this information useful in fashion.
Drafting videos by a professional pattern maker.
European Cut by Elizabeth Allemong
I’ve used this book to successfully draft personal slopers.
Concepts of Pattern Grading: Techniques for Manual and Computer Grading by Kathy K. Mullet
Computer-Aided Pattern Design and Product Development by Alison Beazley, Terry Bond
Technical Sourcebook for Designers by Lee & Steen.
Textbook about technical design and product development in the apparel industry.
Affinity programs by Serif
Alternative to Adobe products. I love Affinity Photo and Publisher. I’m not as familiar with Affinity Designer.
Free, open source parametric pattern design software (PDS).
Disclaimer: I am not advocating that you purchase anything. These are just resources that I have used and appreciated and that I think are valuable enough to recommend to others.