I've just downloaded the starter edition of Delphi 10.

I've just downloaded the starter edition of Delphi 10.2.3 and I'm looking for recommended books on Delphi. Is "Delphi in a Nutshell" by Ray Lischner still relevant? It was published in 2000, so I'm wondering if it's too out-of-date to be useful. And where can I find the eBook edition of "Object Pascal Handbook" by Marco Cantù? It's supposed to be available for free, but when I click on the download button, I get "Not authorized" (even though I'm logged into the Embarcadero forum). Any other recommendations, besides the books published by Packt? (I'm not a big fan of their books, I think they're very poorly edited.)

Thanks.