
"Design beautiful websites using this simple step-by-step guide"--Cover.
It really comes down to practice. You could try imitating the websites you like (implement but not release). It's good practice and will actively show you what tiny details go into each website such as layout, typography, gradients, shades, texture, colors, and so much more.
However, keep in mind that while the designs presented in many of these resources may look outdated, the principles behind them are solid. Tastes and trends may change, but running through a few Photoshop tutorials will get you up to speed on the execution of the latest styles. More importantly though, design basics such as readability, whitespace, proximity, alignment, proportion, color, texture, etc are timeless. If you can distill those important aspects from the materials you're reading, you'll be much better off in the long run than if you just try to copy techniques from whatever the most modern resource currently is.