Threading your machine correctly is critical. The first step in getting your sewing machine threaded correctly is to learn how to wind thread on a bobbin.
How to Wind a Bobbin Sewing Machine
How To: Wind a Bobbin (Sewing for Beginners)
How to Wind a Bobbin on Your Sewing Machine - The Ruffled Purse®
How to Load a Bobbin Sewing Machine
How to Wind a Bobbin on the Chorus
How to thread wind a bobbin using a butterfly sewing machine
How to Wind a Bobbin
How to Wind a Sewing Machine Bobbin in Five Easy Steps - FeltMagnet
How to Wind a Bobbin - BEST Beginners Guide
How to Wind a Bobbin on a Vintage Sewing Machine: Sewmor 606 and Replace Bobbin Winder
Sewing 101 How to Wind a Bobbin
How to Wind a Bobbin - The Birch Cottage
How to Wind a Bobbin + additional information you should know.
How to Wind a Bobbin Correctly Every Time
How to get the Thread from the Bobbin Case