WordPress Theme Installation is very easy compare to coding. It just need few steps to choose, upload, install and activate.
About WordPress Theme
WordPress Themes allow users to change the look and functionality of a WordPress website without altering the core code or site content. Every WordPress website requires at least one theme to be present and every theme should be designed using WordPress standards with structured PHP, valid HTML (Hypertext Markup Language), and Cascading Style Sheets (CSS).
Check Attached “WordPress Theme Installation in Various Ways” Video
In my above video, I did my best to show you best possible ways to install a wp theme successfully.