Chapter 1: The importance of site performanceWhy is Site Speed So Important2 minsWhat This Course Covers2 minsWhat You Should Know2 minsCommon Terms4 minsChapter 2: Site content optimizationImage & Media Optimization5 minsWhat is Lazy Loading and How Does It Work?4 minsWhat are Render-Blocking Assets?4 minsRemoving Missing Files3 minsPractical Application: Speeding Up WordPress16 minsChapter 3: Caching and CDNsWhat is Cache and How Does It Work?4 minsCaching Pitfalls4 minsUsing a CDN4 minsPreventing Mixed Content Errors4 minsChapter 4: Coding practices for a strong foundationGood Coding Practices4 minsWriting Critical CSS5 minsJavaScript Best Practices5 minsLazy Loading, Async, Defer4 minsOn Database Queries5 minsChapter 5: Speed tests and performance trackingWhat Are You Testing For?3 minsDoing Speed Tests5 minsUsing Chrome Developer Tools3 minsActual Device Testing4 minsUsability Testing3 minsChapter 6: Next StepsNext Steps1 min Play videoPreviousNextCaching is a common solution to the problem of site speed - but there are different types of cache, and deploying it incorrectly can hurt more than help. So here's an overview of what Cache is and how it works.Additional ResourcesHow to Clear WordPress Cache On Your SiteWhat Is Cached Data? Explore 3 Easy Ways to Clear It