Performance 3 min
How to Fix WordPress CSS Changes Not Showing Up
Edited the stylesheet, reloaded, nothing changed. There are five caches between your file and your eyes, plus one CSS rule quietly winning.
Performance
Why a WordPress site is slow, and what actually fixes it.
Performance 3 min
How to Fix a Slow WordPress Theme
Before you replace the theme, find out whether the theme is actually the problem. Often it is the images, the host, or one plugin.