You don’t need to be an engineer to run WordPress, but knowing how the pieces fit together makes you a far better troubleshooter. First we’ll pop the hood, then I’ll give you a guided tour of the dashboard, your site’s control room.
The four moving parts
- PHP: the programming language WordPress is written in. It runs on your server and builds each page.
- The database: usually MySQL or MariaDB. It stores posts, pages, comments, users and settings.
- Themes: control how your site looks: layouts, fonts, colors and templates.
- Plugins: add what your site does: forms, SEO tools, stores, backups and more.
When someone visits, WordPress loads its core, your plugins and your theme, asks the database for the content, wraps it in a template and sends finished HTML to the browser. Because pages are built on demand, caching matters for speed (Module 5). Uploaded images and files live in wp-content/uploads, not the database.
The best part of this design: content, looks and features are separate. You can switch themes without losing your posts, like changing the outfit without changing the person.
Professor’s warning: Never edit WordPress core files directly. Updates overwrite them and your changes vanish. Customize with themes, the Site Editor or plugins instead.
Your dashboard tour
Log in at yoursite.com/wp-admin and you’ll land on the Dashboard. The left-hand menu is your map. Menu items can vary slightly with your theme and plugins, but here are the core stops:
- Posts: dated articles for your blog, plus Categories and Tags.
- Media: your library of images, videos and documents.
- Pages: timeless content like About, Contact and your homepage.
- Comments: approve, reply to or remove reader comments.
- Appearance: themes and, for block themes, the Editor (Site Editor). Classic themes show Customize, Widgets and Menus instead.
- Plugins: add, activate, deactivate and update features.
- Users: manage accounts and roles (Administrator, Editor, Author, Contributor, Subscriber).
- Tools: import, export and Site Health checks.
- Settings: General, Writing, Reading, Discussion, Media, Permalinks and Privacy.
The black bar across the top is the admin toolbar. It lets you jump between the front of your site and the dashboard, and shows shortcuts like “+ New.”
Your assignment
- In one sentence, explain what the database stores versus what the theme does.
- Click through every item in the left menu once, without changing anything.
- Open Tools, then Site Health, and note any recommendations it lists.
