If you're new to Linux, the biggest change from Windows or macOS is probably the command line. Depending on how you use Linux, you might not have to dip into the terminal often, but you will have to ...

Replace Bash with Zsh (sudo apt install zsh; chsh -s $(which zsh)) for autosuggestions and config power. Install Oh My Zsh for 150+ themes and 300+ plugins to easily theme and extend Zsh. Use Kitty, ...