This is a good basic tutorial for this. I learned how to do this years ago for my 3rd project. You can make reversible Fair Isle patterns that look amazing on both sides.
double knit cast on. This could be a neat way of casting on without seeing the cast on stitches.
This site has tons of helpful video tutorials to teach you how to knit.
A double knitted baby blanket for counting stars: Octave or Octavie by imawale imawale [Una copertina da neonato lavorata con la tecnica del double knitting per contare le stelle: Octave or Octavie di imawale imawale]
Double Knitting - How to Knit Two Layers of Reversible Fabric at the Same Time
Wonderful tutorials for Double Knitting on this site ... basics, shaping and more
Stunning Double Knit Cowl - Free pattern . Cannot wait to begin this one. A nice refresher course for double knitting. <3
Simple Double Knit Tutorial
Use double knitting to make the Trapper Cowl from Knits Winter! Also check out a really informative video by Annie Modesitt all about double knitting and its various methods.