Twice the Fun with Double-Stranding – Elizabeth Smith Knits
Double Stranding 101 – Elizabeth Smith Knits
What is double knitting? - The colorwork technique explained
Knitting needle sizes & Conversion chart [+ recommentation for beginners]
Aeelike Double Pointed Knitting Needles Set 20cm, Short Double Ended Knitting Needles for Beginners, 55Pcs 2.0-6.0mm DPN Knitting Needles Sets UK, Metal Knitting Pins for Knitting Small Projects Socks : Amazon.co.uk: Home
Condo Knitting: Knitting with Two Different Size Needles | AllFreeKnitting.com
Choosing Your Knitting Needle: Sizes of Needles | The Knitting Circle