What is the correct way to use blocks in Jade layout?

Question

HTML

Good day! Recently started using Jade. At first everything was fine, but then I began to think about the correctness of my actions.
The essence of the question is this: how to use blocks correctly, name them and structure them?
I'm starting to type up the index, I have a block _about.jade, _contact.jade and so on. I connect them via Include and all is well. In fact, the main page is a brief description of the entire corporate site. But then I start to typeset the about.jade page and I understand that I already have such a block. Somehow I misunderstood the essence of the blocks ... And I don’t know how to name the blocks correctly, maybe something like _index--about or create a separate folder with blocks on each page, or it turns out not to be a block at all if I only use it on the home page?
Structure at the moment:
prntscr.com/a5ptax
Все блоки сейчас созданы для главной странице
Сайт не большой по сути, 5 страниц. Можно было все сделать без блоков, но мне хотелось бы понять саму суть

Answer 1

IMHO, only what is clearly used in several places should be put into blocks. Otherwise, you will end up with a bunch of files that are only used once.
There are also mixins. I recommend reading about them. The bottom line is that if several pages have similar blocks with a slight difference, mixins will allow you not to duplicate the main code.

Answer 2

Look here https://github.com/zoxon/gulp-front
Pages in the source/pages
folder Blocks in the source/modules folder