I don't remember the exact beginner tutorials I used at first, but I do remember that I had many projects and stuff I wanted to make and googling like a madman, solving a problem after another one.

Always questioning what I was doing and searching for better ways of doing it led me to https://html5doctor.com/ and https://css-tricks.com/ for really understanding things, and w3school often popped up for basic syntax.

This way was quite hard at some points though, when I tried to do some stuff too difficult for my level at that point and I got frustrated (in exchange I learned how to manage that frustration!). If you can, definitely find someone who knows these stuff to at least guide you a bit.