The 4th edition of Stroustrup's classic was updated to reflect modern practices. [0]
Scott Meyers, author of Effective C++ also wrote Modern Effective C++. [1]
Lastly for pure online reference, cppreference.com. [2]
[0] https://www.amazon.com/C-Programming-Language-4th/dp/0321563...
The Definitive C++ Book Guide and List : http://stackoverflow.com/questions/388242/the-definitive-c-b...
I like the breakdown of books by their goals in this FAQ : https://isocpp.org/wiki/faq/how-to-learn-cpp
I would say 'C++ Primer 5th Edition' and 'The C++ Programming Language 4th Edition' are good.
And of course, Effective Modern C++, although the other Effective series books from Meyers are a must read.
http://www.informit.com/store/c-plus-plus-primer-97803217141...
http://shop.oreilly.com/product/0636920033707.do
http://www.informit.com/store/c-plus-plus-programming-langua...
http://www.informit.com/store/effective-c-plus-plus-55-speci...
The most amazing thing about it is how it manages to be so entertaining to read (the last thing I expected from a C++ textbook and a thing that made getting through it way easier)!
>I'm not sure if there's an even more recent edition that covers C++17 and C++20
Sadly, there is not. Scott for-the-most-part retired in 2015: https://scottmeyers.blogspot.com/2015/12/good-to-go.html