I've been doing it wrong for 55 years!
Just recently I was checking out videos on crocheting, and made the sickening discovery that I have been crocheting the wrong way.
When you learn to crochet, the hook is inserted from the front, and the yarn carried in back. I insert the hook from the back and carry the yarn in the front. Maybe it is not important, but it does make a difference, especially in single crochet. I've been working on correcting this, and it is not that difficult to transition from one to the other. Which enabled me to make a pair of mirror image mittens out of variegated yarn, One being made inside out, while the other is crocheted right side out. As long as the colors in the yarn matched and are running in the same sequence, it works. I don't see much difference in the way the double crochet looks, but i am sure there are differences. Now I'm wondering if I taught my daughter the wrong way.....