What is a filter? and how to avoid it?

Question

Search Engine Optimization

Hello.
1. Please tell me what is the filter under which the site will fall and how to avoid it?
2. What to pay attention to when writing texts? Whatever the site is not for SEO but also for people.
3. How to advance in the field of SEO? are there any good sources? textbooks?
4. Is there a course on assembly semantics? can you recommend?
Thank you all very much))

Answer 1

there are a lot of filters , the best way to avoid is unique (not rewriting) content, no adult and near-related topics
for experience, Google finds rewriting better
and
better

Answer 2

In addition to the internal factors of the site, the filter can be obtained for external links, cheating behavioral factors, the use of deceptive advertising (for example, mobile offers with viral redirects). In general, the text is not the only factor of influence on the site itself: there is also design, layout, structure, which can also influence

Answer 3

Yandex uses a different term - violations. They are closely related to search engine optimization techniques aimed at deceiving users and search engines.
Violations are displayed in Yandex.Webmaster in the "Security and violations" section and in "Site diagnostics".
A list of those can be viewed at the bottom of this page: https://yandex.ru/support/webmaster/yandex-indexin... (This is Webmaster Help).