Here is a step-by-step guide on how to install a WordPress plugin:
Step 1: Log in to your WordPress dashboard. To do this, enter your website URL and add /wp-admin to the end of it (e.g. http://example.com/wp-admin). Then enter your username and password to log in.
Step 2: Once you're logged in, click on the "Plugins" tab on the left-hand side of the dashboard.
Step 3: Click on the "Add New" button at the top of the screen.
Step 4: In the search bar, type the name of the plugin you want to install. You can also browse through the Featured, Popular, or Recommended plugins, or use the "Upload Plugin" button to install a plugin you have downloaded.
Step 5: Once you have found the plugin you want to install, click on the "Install Now" button.
Step 6: WordPress will now download and install the plugin for you. Once the installation is complete, click on the "Activate" button to activate the plugin.
Step 7: Some plugins may require you to configure their settings. To do this, go to the "Settings" or "Configure" tab for the plugin and follow the instructions.
Congratulations! You have successfully installed and activated a WordPress plugin.