NO SEW, Mask from a T-shirt (U.S. Surgeon General, :45 seconds)
Pleated and shaped masks recommended, no printer needed!
Boxy Mask with filter pocket recommended, straight sewing and good for larger faces.
Sewing Emergency Medical Face Masks: for complete beginner (Masks4Medicine)
Accessible Design Fabric Mask Pattern (Washington Post, 4/5/20)
Pattern Library (makemasks2020)
Learn to Hand Sew (no machine necessary) a tutorial
Coronavirus: Which Mask Should You Wear? (Types, Protection, How to Make) (NY Times)
Slowing Spread of Coronavirus Infection with Homemade DIY Masks (YouTube video, 6 min 45 sec) (Lex Fridman, MIT)
What's the best material for a mask? ("The best-performing designs were a mask constructed of two layers of high-quality, heavyweight “quilter’s cotton,” a two-layer mask made with thick batik fabric, and a double-layer mask with an inner layer of flannel and outer layer of cotton.")
Selected biomedical evidence:
van der Sande, M., Teunis, P., & Sabel, R. (2008). Professional and home-made face masks reduce exposure to respiratory infections among the general population. PloS one, 3(7), e2618. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2440799/
Davies, A., Thompson, K. A., Giri, K., Kafatos, G., Walker, J., & Bennett, A. (2013). Testing the efficacy of homemade masks: would they protect in an influenza pandemic?. Disaster medicine and public health preparedness, 7(4), 413–418. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7108646/
Substance abuse support groups:
NYU Librarians recommendations for YouTube yoga: