Come join Bonnie for her 2021 Mystery Crochet Along! Here's video #1 (of 6)...
The written pattern will be available on Bonnie's blog at http://bonniebaycrochet.squarespace.com/blog/ while the CAL is active (October/November 2021) and in her LoveCrafts store (https://www.lovecrafts.com/en-us/search?q=bonnie+barker) after November 2021.

Other helpful video tutorials for this CAL:
Aran/Celtic Crochet Stitches Playlist: https://www.youtube.com/playlist?list=PLoIugZBYOS0WifcAU6rS7JDtaXV7-BD6E
How to remove extra chains: https://www.youtube.com/watch?v=6c_tKmmfn6Y&t=6s