Replacement of plugins in WordPress – WordPress Development Stack Exchange

I'm working on a website (based on WordPress) in which I want to replace some plugins. The name of the plugin that I want to replace is Accordion Shortcodes, I wonder what best practices I have to follow to replace a plugin in WordPress.

The Accordion Shortcodes mentioned in this tutorial is a simple plugin that adds some shortcodes to add accordion drop-down lists to your pages.

The accordions should fit seamlessly into your subject. However, you may want to edit the main style sheet of your theme to add custom style (see below for sample CSS).

Problem:

I'm wondering which website to look at and which best practices I have to follow to replace a plugin in WordPress.