Neural Nets for the very Children:
https://habrahabr.ru/post/312450/
https://habrahabr.ru/post/313216/

NN Architectures Intro:
https://habrahabr.ru/company/oleg-bunin/blog/340184/
https://www.youtube.com/watch?v=XY5AczPW7V4
https://www.slideshare.net/grigorysapunov/highload-2016

https://hackernoon.com/tagged/neural-networks

https://hackernoon.com/neural-networks-without-a-phd-components-of-a-neural-network-9d98b056995b
https://geektimes.ru/post/287696/
https://habrahabr.ru/post/318970/

2019
https://habr.com/ru/post/453558/
https://towardsdatascience.com/https-medium-com-piotr-skalski92-deep-dive-into-deep-networks-math-17660bc376ba