Glenda, a.k.a. Creative Grandma posts videos on YouTube, usually with her adult grandson who is an avid crocheter or one of her daughters who also crochets, discussing the pros and cons of various brands' yarn lines and shows how they look worked up in different stitches. Glenda is a retired professional crochet pattern designer who worked for Annie's Attic and Leisure Arts Publishing. She and that same daughter run the Creative Grandma crafting business featuring both free patterns to download and crochet pattern kits for sale.

There are a lot of interesting stitches to download for free and they keep adding new ones.

https://creativegrandma.net/crochet-patterns/