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Why learning with Classgap?

Satisfaction guaranteed

If you're not completely satisfied after your first class, we'll refund your purchase. more info

If you didn't do the lesson, it's cancelled or you are not completely satisfied within 24 hours passed your first lesson, we'll help you find a new tutor or refund your purchase.

Change the date at any moment

You will be able to reschedule the class if you can't assist.

Pay once you've received the lesson

We will make the payment of the lesson when finished more info

You will need to enter your payment details. In the case of individual class bookings the amount will be charged at the time of the class, but in the case of packs the payment is made in advance.

Nikolai R.

He's from Russia , currently lives in France



over 1 year of experience teaching online classes

  • Programming Languages
    C++ Beginner, Intermediate, Advanced
    Python Beginner, Intermediate


EnglishFull proficiency



Ph.D. Computer Science Studying
Master/Postgraduate Computer Science
Master/Postgraduate Applied Mathematics


Hello! I am a Ph.D. student in Computer Science, currently working in the field of bioinformatics. I love programming, as well as to share my knowledge and to teach others. Let's get along!

Book an online lesson (The calendar displayed shows your local time)

Nikolai R. accepts bookings with at least 12 hours in advance.

hours Monday


Scott Chaplinski
4 reviews
haydar jawad
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Frequently Asked Questions

• Can I cancel a booking?

Yes, you can cancel booking up to 8 hours before the lesson starts, indicating the reason for the cancellation. We will study each case personally to carry out the refund.

• How do I pay for the lesson?

At the time you select a lesson or package of hours, you will make the payment through our virtual payment service. You have two options:
- Debit / Credit
- Paypal
Once the payment is settled, we'll send you an e-mail with the booking confirmation.

• Can I modify a booking?

Yes, something unexpected can always happen, so you can change the time or day of the lesson. You can do it from your personal area in "Scheduled lessons" through the option "Change date".

• How does a lesson at Classgap happen?

The class is done through classgap’s virtual classroom. Classgap was developed specifically for educational purposes, including many useful features such as: digital whiteboard, online text editor, webcam, screen sharing and many more.

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