Creating webpages using div (study resources)

I am newbie in web development. I have studied almost popular languages, frameworks, technologies required to build web site. I know that the best practice is to create site using div blocks.

I have read some articles,there are different approaches everywhere.

I am looking for a good article, book, course etc... , about patterns of developing web layouts. I need something to use like an example of well-designed web page. Please suggest some good example to study.