Don't have favorite tutorials because if you want to become a web designer, you will need to learn more things like CSS, HTML, PHP, MYSQL..etc
Beginners used to go w3schools for first tutorials and have a look how to use html, css, php,...how to design a simple web templates.
I learned from more sources like forums, vidoe courses, ebooks..so I would suggest you try the same as I did.
Besides, you need to make real web projects to have real experience on web design field.
If you want to stop at beginners level, go wordpress cms, it will help you design websites fast without more knowledge about programming...
Just my 0.2 cents!