The most simple and understandable courses, video tutorials, articles and math textbooks on the Russian language?

I found at the moment:

Courses:
School course to grade 10
spaceMath (1-6 class project abandoned)
Stepik Basic training course for OGE in mathematics (grade 6-9) a wonderful course, just a few stupid tasks

School course class 10-11
Nothing found
I would be grateful if someone will advise how to fill this gap.

Higher mathematics
Combinatorics
Stepik fundamentals of enumerative combinatorics (it stumbled, almost nothing is explained and given a heavy task - not recommend)
Sogea Combinatorics for beginners
Probability theory
Stepik probability Theory
Sogea probability Theory for beginners
Graph theory
Stepik the Basics of graph theory
Stepik Fundamentals of discrete mathematics (combinatorics, graph theory, discrete probability)
Sogea graph Theory
Theoretical computer science
Stepik Introduction to theoretical computer science challenging course, starting it realized that not enough mathematics
Further study is still not present, I would like to understand the theory of automata and statistics, meet Mat. analysis .

Video tutorials
GetAClass
@OpenLektorium
@KhanAcademyRussian
3Blue1Brown (in English but with subtitles that you can understand)

Sites, directories, articles:
mathProfi disgusting design, poor structuring

Books:
Found nothing.
I will be glad if someone will recommend 1-3 books, not stupid books, but not reasoning about mathematics. A simple and clear explanation how it works, what topics, concepts, and tools.
April 3rd 20 at 18:53
2 answers
April 3rd 20 at 18:55
not found in open access on the ozone also no - elroy.Wi commented on April 3rd 20 at 18:58
@Henderson_Schinner66, https://drive.google.com/drive/folders/1IcYgWR7kz6... - hermin commented on April 3rd 20 at 19:01
April 3rd 20 at 18:57
I recommend to hammer into a search engine "Soviet math books"

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