We offer various options for receiving notifications about new course chapters, but the Telegram channel is more than just notifications. There we publish announcements, warn about vulnerabilities, and share the most interesting news from the world of IT security. All course readers are recommended to subscribe to the channel.
Information on the YouTube channel duplicates information in the course, however, many settings are easier to perform through video instructions rather than articles. Subscribing to the YouTube channel is our second advice.
Course readers on computers and tablets can choose a convenient font style and size. To do this, click on the settings icon in the upper right corner of the site. The selected font is saved for further study of the course.

If you find an error in the text, highlight it and press Ctrl+Enter. You will be offered a form to send information about the error. Mobile and tablet users should highlight the error and click the 'Report Error' button at the bottom of the site.
We welcome any information about both grammatical and technical errors.
The course author can be contacted by email book@cyberyozh.com. I try to answer all questions and suggestions to the best of my ability.

The best compliment to our course is the absence of your need to seek consultation. But if it arises, the CyberYozh.com website in the 'Services' section has all the information.
When reading the course, we collect some statistical information about you. You can learn about what data we collect here.
I will remind you of this more than once. Developers spend their time and ask nothing in return, but that doesn't mean they shouldn't be supported. Your donations allow them to spend less time on their main job and devote more time to products. Ultimately, you will get high-quality and secure open-source solutions.