A good way to learn more is to search for books about topics you're interested in e.g.; sqlite, zeromq, google testing libraries, opengl... 1. https://www.amaz

A good way to learn more is to search for books about topics you're interested in e.g.; sqlite, zeromq, google testing libraries, opengl... 1. https://www.amazon.co.uk/Design-Patterns-Object-Oriented-Addison-Wesley-Professional-ebook/dp/B000SEIBB8 https://www.amazon.co.uk/Design-Patterns-Object-Oriented-Add... 2. https://www.oreilly.com/library/view/using-sqlite/9781449394592/ https://www.oreilly.com/library/view/using-sqlite/9781449394... 3. https://www.glprogramming.com/red/ https://www.glprogramming.com/red/ 4. https://gameprogrammingpatterns.com/ https://gameprogrammingpatterns.com/ 5. https://zguide.zeromq.org/ https://zguide.zeromq.org/