How To Darn Socks

1. You need a darning needle and darning thread, not a regular needle and thread.
2. Put the yarn through the needle but no need to make a knot, it should stay if you just weave it. Just pull the thread through the needle a bit, so there's one short end and one long end (no need to double it like when sewing on a button).
3. Put something in the sock around the hole like a tennis ball or a light bulb. This is to cause the sock to maintain its shape - if it gets bunched up when you're darning, it will be uncomfortable to wear, like you have rocks in your shoes.
4. Thread in and out in a circle around the hole.
5. Thread a bunch of rows over the hole, then a bunch of columns, like a grid.
6. When you're doing the columns, go over and under each alternating row (weaving).
7. At the end, go in and out at a non-hole part of the sock to reinforce it.