What is double-knitting? - a left- and right-handed knitting tutorial

Double-knitting creates two layers of knitted fabric simultaneously. It can be used to knit reversible stitch patterns in more than one colour.

How to double knit - Step by step instructions for beginners [+video]

Double Knitting Holding Both Yarns in Left Hand Continental Style

How to Knit: Complete Guide for Beginners - Sarah Maker

How to Knit FASTER with Continental Knitting

Learn to Knit: Yarn Over - Ysolda

Double-knitting stocking stitch - a left-handed knitting tutorial

Knitting - Wikipedia

How to Knit the Knit Stitch: Step by Step tutorial [+video with slow-mo]

Two-pass Knitting for Multi-color Stranded Colorwork [Tutorial] :: talvi knits.