I have been programming for a long time, but I understand many articles only approximately - this is normal. Study the area that really interests you: read books, articles and all kinds of HOWTO guides, more practice (if you are programming), do not hesitate to search engine (this way you will learn how to write search queries correctly - this is also a very important skill). This is the only way you can understand what is being written about on this resource.
Habr is mostly a site for IT specialists or beginners. If you want to understand Habr - become a part of them. Learn programming and you will succeed.
Or read that department habr, which is about management, marketing, etc.
For some reason, it immediately occurs to me to google more, read some books on the topic for beginners, you can find acquaintances / friends in the field and discuss. :)