Here are some helpful diagrams of stitches used in my patterns for anyone who may need a quick reminder - or indeed anyone wishing to learn how to knit for the first time -

Figs 16, 17 and 18 show how to cast on a stitch.

Figs 25, 26 and 27 show how to add another stitch.

Figs 49 and 50 show how to increase by knitting into front and then back of one stitch to make two stitches.

Fig 51 shows how to decrease a stitch by knitting two stitches together.