Wow, I’m a Linux user for less than few months. Still learning, and to force myself to learn more, I ditched all Windows operating systems I had, including the dual boot!
It isn’t difficult finding resources on the internet, especially on the torrent network. I prefer video courses and found a bunch. I only need time to watch, learn and practice. I wish the day was 48 hours rather than 24!
depends on what your doing, I spend most of my time in Linux at a terminal, so doesn’t really matter…
use XFCE on Kali just as it comes as default, usually a tiling window manager on other Linux distros, and without the systemd mess as well given the choice…