Knitted yarn over creating a hole. This is the simplest method to make buttonhole, and is also widely used in lace knitting.
HOW TO: Knitted Yarn Over – Creating a hole - Oh La Lana! knitting blog
How to do Yarn Overs FOUR Different Ways!
How to knit a yarn over – DONNAROSSA
YO! All About Yarn Overs
HOW TO: Knitted Yarn Over – Creating a hole - Oh La Lana! knitting blog
HOW TO: Knitted Yarn Over – Creating a hole - Oh La Lana! knitting blog
How to Do a Yarn Over
How to Do a Yarn Over
Adjusting Yarn-Over Sizes- Continental
How to knit a yarn over – DONNAROSSA