Plugins add features to your site, from contact forms to SEO tools.

1. Log in to your WordPress dashboard.
2. Go to Plugins > Add New.
3. Search for the plugin, or click Upload Plugin to install a .zip.
4. Click Install Now, then Activate.

Note: Only install plugins you need from reputable sources, and keep them updated (article 90). Too many plugins can slow your site and increase security risk.