Installing postgres on windows/mac is pretty simple, you just follow the steps on the installation wizard and you get it working. You will also find lots of video tutorials and blogs regarding installation in windows/mac.
But when it comes to linux (specifically arch), things get interesting. Since linux gives you more control, setting up anything on it can seem tricky at first glance but as you go through, you understand each and every step and its purpose.
Before getting into it, understand this : Postgres is not like MongoDB which you initialize once through the CLI by providing the --dbpath flag, it is a system service. Meaning it will run on the system 24x7 (if we configure it that way) and different system users will be able to use it according to the access they have been granted.
First things first : Installation
Always update the packages first :
