For those that want the answers, Rainer Grimm's book:

"C++ Core Guidelines Explained - Best Practices For Modern C++"

has just been published. See
https://www.amazon.co.uk/C-Core-Guidelines-Rainer-Grimm/dp/013687567X/ref=sxts_rp_s1_0?

Temporarily out of stock is what I see, while the US Amazon site says it is not available and may never be in stock as a physical book.

https://www.amazon.com/dp/013687567X/

Kindle version is available, to be released on 8 April.

https://www.amazon.com/dp/013687567X/

I believe I will wait for it to be released on leanpub (if ever) in multi-eBook formats so I can bypass the Amazon DRM restrictions imposed on e-Books purchased through Amazon. As well as know the author will get a decent chunk of the money for the sale.

He (Rainer Grimm) has a decently priced 3-book C++ bundle at leanpub I'm saving to purchase.

https://leanpub.com/b/modernccollection#bundle-page-c20

I (somewhat) wonder what the UK/EU pricing for the bundle is in Pounds or Euros.

Cool! I really really like the writing and explanation style of Rainer Grimm. His code snippets avoids the unnecessary code jargons and as a result you grasp the core concept quickly.

I will have to check this out too. I love programming books that spell things out and baby you as a beginner.

*OUCH!* US Amazon finally has the paperback in stock, US$66.48.

The eBook is considerably cheaper.

So far it doesn't look leanpub will carry the C++ Core book. *sad*

Earlier today I purchased the leanpub 3 book bundle I linked, and glancing through the books they do look to be worth the money.

Another C++ book I could recommend is Best Practices by Jason Turner.
https://leanpub.com/cppbestpractices

Amazon has it available as a paperback book.
https://www.amazon.com/Best-Practices-Color-Syntax-Highlighting/dp/B08SGYGYS7/

One nice thing about getting the book on leanpub is there have been several updates since it was originally published. At no extra cost.