How is a site indexed with non-unique content?

Question

Marketing

Friends!
We are launching an educational project that will contain wiki-like materials on the topic of health.
A good part of the materials is unique, but we plan to post non-unique content on the resource with links to the original source. Audience source - youtube channel and VK public with a huge subscriber base
Questions:
1) Will non-unique materials affect resource indexing?
2) What is the allowable amount of non-unique content on the resource that can be placed so as not to get banned from Google.
Thank you!

Answer 1

1) they will affect the issue, you will be lower or nowhere at all
2) no one knows, Google hawala perfectly generated, but it’s better not to abuse it

Answer 2

Someone else's content can harm the site (or maybe not :))
If possible, postpone adding these materials to the site or simply close them from indexing.
Over time, when the project is considered trustworthy enough, it will be possible to open these sections for indexing.

Answer 3

1. When the crawler enters the site, it will download the first portion of the content.
2. The crawler passes the portion to the "analyzers", they will set a crawl score based on the quality metrics.
3. Information about the score comes to the crawler, and at the next crawl of the niche, based on the scores of the sites, the crawler's queue for crawl is formed.
Neunik, is processed according to the residual principle. If there is nothing better, then it will be nice to drive everything into an index. But if there is a lot of non-unique in a niche, then it will score.