Download the ZIP, and then put it in the Packages directory, which can be found by doing Sublime Text -> Preferences -> Browse Packages...
What are the naming conventions that should be followed when naming a zip file? Where to place it? What other configurations do I need?
It really depends on the specific package that you are downloading. For some packages, you can name whatever you want. For others, the name must be exact. If you download these packages manually from GitHub, I highly recommend that you read the documentation in README. They usually provide instructions for manual installation. For example, if you want to manually download the Spacegray theme, it will tell you to download the ZIP, unzip the folder and rename it to Theme - Spacegray .
saadq
source share