Hi there,
I just ran a speed test of my website and scored pretty poorly. When I looked at the diagnostic, the main reason for my slow page loading time is the “render-blocking resources”. Basically, they told me I had too many CSS/JS styles and to remove the useless ones but I don’t know which ones are useful and which ones aren’t.
I am already aware of your guide to improve page load time and I already know the basics: caching, optimizing images, etc.