I've created this thread more for myself, than for the players, but if you interested - feel free to comment.
I want to write down all of my progress with next update on campaign. This, i hope will help me to manage my time wisely

In this guide you can learn about download and installation process of our campaign, also about some solutions for common problems with our campaign.

Read "Back To School" Troubleshooting Guide here.

Better late, than never! :D

Also some news here[bts-l4d.com] and on ModDB. (Новость на русском тут[bts-l4d.com])

Eng:
First of all, Happy New Year from BTS Team!
More than two months have passed since the release of Back To School campaign. It is time to sum up and tell you about our plans for the future.

Read article: 68 Days Later[bts-l4d.com] (On ModDB)

Rus:
Уже больше двух месяцев прошло с момента выхода нашей кампании. Самое время подвести итоги и рассказать вам о планах на будущее.

Читать статью: 68 Дней Спустя[bts-l4d.com] (На ModDB)

Eng:
New Update Released! Download here![bts-l4d.com]
Help and Support here!
Also, PC Gamer about Back To School Campaign ;)

Rus:
Вышло новое обновление! Качать тут![bts-l4d.com]
Справка и поддержка тут!
Кстати, Нас заметил PC Gamer!