Use this stitch to make your foundation chain
Hold the hook in your right hand, and both the yarn end and the working yarn in your left hand. Move the hook under and over the yarn to wrap it around anticlockwise.
Pull the hook towards the slipknot, catching the yarn in the hook, and pulling it through the slipknot loop. This forms your first chain (ch) stitch. Repeat steps 1 and 2 to form a chain length.
This is what your row of chains will look like. Hold the chain with your left hand near the hook, to keep the tension. Keep going until you have the number of chains that’s stated in your pattern.