Nonfiction for beginners series

Hi, I'm the author of a series of "Nonfiction for beginners" ebooks/paperbacks. So far, I have written 6 in the series:
1) Mindfulness for beginners
2) Deep Sleep for beginners
3) Cold Water Immersion for beginners
4) Financial Literacy for beginners
5) Productive Remote Working for beginners
6) Running Vitamins & Supplements for beginners

I'm self-published, so appreciate any feedback on them. They are available on Amazon, Apple Books, Google Books, Kobo, Barnes and Noble.

Thanks
A. J. Cameron