I have Sublime Text 3, and I followed the instructions to install the package manager:
Git Install
Since Sublime Text 3 no longer extracts the contents of .sublime-package files by default, and the fact that Package Control needs to read CA cert files from disk for SSL certificate verification, the only viable install method right now is via Git.
Please note, the Packages/ folder listed below refers to the folder that opens when you use the Preferences > Browse Packages… menu.
cd Packages/
git clone https://github.com/wbond/sublime_package_control.git "Package Control"
cd "Package Control"
git checkout python3
However when I search for the package control command by pressing Ctrl+Shift+P, I don't see it.
How do I properly install the package manager?
Packages/Package Control
directory? Did you restart ST3?View > Show Console
to reveal the Sublime Text console and note any messages you see appear here when you start Sublime. They can be a bit cryptic but can often point to the issue. Also note any messages that appear when you paste the Package Control installation code into the console.