Thread advisor, shows fabric type, thread to use, and needle to use. Site also has pdf version.
Complete body/garment measurement guide
Blouse Loose Blouse Shirt Chiffon by HannaBoutiqueHB on Etsy, €49.90
WAWAK Sewing Supplies - needle types
Tipos de calças: modelos e comprimentos - Industria Textil e do Vestuário - Textile Industry - Ano VI
WAWAK Guide To Specialty Threads #wardrobechallenge
Names for some necklines, which seems like it would be useful to know.