I used Jorgensen before I purchased Duntemann's x64 Assembly Language Programming on Linux book. Both are great books for x64 on Linux. As a new learner, I found Duntemann's book to be phenomenal. Jorgensen's is not as in depth, but it is very good. I asked the author if he had an updated version and he sent me one.
Both work with my system (Linux Mint 21.3 "Virginia") pretty much verbatim and both give enough hints to work through system differences if there are any (I used them both for FreeBSD, where the only thing I had a hard time with was the System Calls and Calling Conventions, but I expected that). I don't use SASM, which is featured prominently in Duntemann's book, but all of the examples work fine in gdb. Jorgensen uses ddd, which works fine.
