Sublime Text is an awesome text editor. You can get it either from its website or, if you are on a mac, by running the following:
brew cask install sublime-textNow you need Package Control, that you can either install via the command they offer on their website or, if you have an updated version of Sublime Text, you should find an option to install it under "Tools".
As I'm writing this small tutorial, I assume you've read my previous one about setting up macOS, so if for any tool I'll use without explanation, look to that other article.
The full version IS NOT MANDATORY, as in the tutorial that follows I installed the smaller version of MacTeX and proceded installing every needed dependency. Installing the complete package is about ~3.5GB of download and ~5GB on disk, the smaller one is just about 80MBs.
Click here to download the complete version or here to download the smaller version.