I don't get a lot of physical media because I think they get outdated too quickly, but Charles Bracken's book at NEAF looked really good and I'm glad I bought it. It's chock full of information and a ton of targets I've never considered or known about. It's been very helpful for my remote observatories.
The Siril book was gifted to me by Cyril himself and it has also taught me some things I can take to my Siril scripts as well as science I can do. I mentioned in the video that of the two books, the Siril book is likely to get outdated much faster (beacuse messier objects are unlikely to change now they look), and we see that with all the Scripts that are coming out (mine included). But it still does a really nice job teaching concepts and teaching why we take certain steps which I think is missing from a lot of online tutorials because people are just interested in how to get from Point A to Z in as quickly as possible.
I'm enjoying both of these and wanted to share with you. Links to the books below if anyone is interested.
Get Astrophotography: Mastering Image Processing with Siril: https://siril.us/
Get The Astrophotographer's Universe: https://digitalstars.wordpress.com/the-astrophotographers-universe/