Homebrew is the Missing Package Manager for macOS (or Linux), why do you want to use Homebrew?, it will install stuffs that you need for your apple computer.
Why do you use Homebrew? You want to use it so it will gather all the necessary packages for your mac, it's like for ubuntu there is apt-get command that helps you install the package.
how to install Home to your mac? copy the command below and paste it to your terminal.
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
Then you want to install all the stuffs that you need for your Apple,
brew install wget
That's it~ simple as that.
You can also visit Homebrew to get more information.