In my honest opinion, you won't find any such useful information. I've seen horribly design sites convert extremely well and visually appealing sites convert ex

In my honest opinion, you won't find any such useful information. I've seen horribly design sites convert extremely well and visually appealing sites convert extremely well. Design principles can be broken down into so many broad tangents beyond visual looks that it gets ridiculous. While there are some books that touch on various stuff, in my honest opinion, the best way to learn UX is to really just try various stuff until you understand the basic underlying principles that meet your specific site needs.