About Brixus

Brixus publishes interactive courses you learn by answering, not by rereading. Each one is built and kept current by its founder, Kubilay Tarhan.

Why this method

Stop Rereading. Start Answering.

Rereading your notes feels like studying, but it fades fast. Testing yourself and spacing your reviews are two of the best-established findings in learning research, and every Brixus course is built on them.

That is why a Brixus course is not a document with a quiz at the end. Questions sit in every chapter, right after the explanation they test. Practice sessions bring back what you got wrong until you get it right. Key terms become flashcards that return just before you would forget them. And you can see your progress per chapter, so you always know what to study next.

Illustration of a learner standing on a large book beside a graduation cap

Who Builds the Courses

Brixus is a small, independent publisher based in Amsterdam.

Kubilay Tarhan

Founder

Kubilay is a computer scientist with a background in Computer Science and Business Innovation. With four years of experience designing and developing enterprise software solutions, he brings expertise in scalability, reliability, and user-centric design. He holds a background in teaching and didactics from VU University's pre-university college, giving him deep insight into effective teaching methods and student motivation. He builds every Brixus course himself and keeps it up to date.

How Every Course Is Made

The same four steps, whatever the subject.

Start from the official sources
Every course begins with the material that defines the subject. For a certification that is the exam skills outline and the official documentation, so the course covers what is actually tested.
Draft with AI, at full depth
Brixus has its own pipeline that turns those sources into chapters and questions. That is what makes it possible to cover a whole skills outline with hundreds of practice questions instead of a handful.
Review every chapter by hand
Before a course is published, its chapters and questions are checked against the official sources and corrected. Questions learners flag from inside a course go back on the review list.
Keep it current
Exams and subjects change. When they do, the course is updated, and everyone who bought it gets the new version at no extra cost.

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What We Stand For

Practice first

Every course is built around answering, not rereading, because that is what makes knowledge stick.

Honest about what you get

Every course has free sample questions, so you can judge it for yourself before you buy.

Kept current

Courses change when their subject does. A course you bought stays up to date for as long as it is available.

Want to publish your own interactive course? Create one from your own material .

Free to try

Start with a free question

Pick a course, answer a few of its sample questions, and buy only when you're sure it's for you. One payment per course, no subscription.

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Try a Free Question