​​STOP! You Are About to ​Thrive in Data Science...

​​Here's a scientifically proven way to learn​ 44% faster, build your new ​high-income ​data science skill, and put yourself on the road to ​mastery ​learning Python's wildly popular NumPy library for data science!

"Enjoyable Way of Learning"

​Vlad Bezden,
​​Software Developer

"​Great Book with Focus on Real-World Problems"

​Chris Cartwright

​Professional Editor and Python ​Consultant

​"Another great little Python book from Christian and his colleagues. As a practitioner in this field, I really appreciate the focus on real-world problems. I ​can see my coffee breaks will be full for some time to come!"

​Master the art of data science with Python's most important library:

​​Have Your "Coffee Break ​NumPy" Now!
​Zero Risk. ​365 Days (!) No-Questions-Asked Money Back Guarantee​!
​And keep the book.

​​Your ​NumPy skills improve by ​>33%​​. Guaranteed.

​If you don’t think that the book is worth your time, you’ll get 100% of your money back ​for as long as ​​365(!) days after the purchase! Just like that. And you keep the book for free​.

​Promise: If you read this book, your ​NumPy skills will measurably increase by at least 33% or it’s free.

Here is how it works: You simply ​test your skills for free at ​the online Python training platform Finxter.com before and after reading.​

​Fear of missing out on data science and machine learning?

​The trend of automation is not coming to a halt soon. Machines take over more and more traditional jobs from human workers.

But also highly-skilled knowledge workers such as doctors, traditional computer scientists, teachers, and financial analysts are under the danger to be replaced by machines.

This is the era of machine learning and data science.

And missing out on data science can be the #1 most costly mistake of your career.

​​This ​eBook package ​gives you a fun way to start learning data science with Python. ​It gives you a thorough introduction in one of Python's most important libraries for data science and machine learning: NumPy. 

​This book ​uses the proven method of solving practical code puzzles and practice testing -- to make learning more fun, faster, and ​easier.

​Practice testing is scientifically proven to generate ​up to 44% better learning retention and ​efficiency.​

"Students who were quizzed after studying a short text could recall significantly more information than students who were asked to reread it" (Karpicke, 2007b)

[BONUS] NumPy Course Material

​Reading the ​textbook isn't enough? No problem. Watch the ​150 minute-long mini-course for 20-70% better retention of the material.


​​Become an entry-level data scientist with NumPy

  • ​Understand ​NumPy code ​quickly.
  • Learn all the basic ​NumPy concepts and data structures.
  • ​​​​​Finally understand ​the most important NumPy functions and how to use them for practical problems.
  • ​Track your ​NumPy skill level exactly and compare it against other coders.
  • ​BONUS: ​Play around with all the 4​​6 code puzzles in your Jupyter Notebook.
  • ​BONUS: Lean back and watch the NumPy tutorial videos designed to improve your understanding of the book.

As an additional bonus, you ​can track your individual ​NumPy coding skill level throughout the book. After reading the book, you'll know exactly how good you are in comparison to your ​friends and colleagues.

To get the most out of this book, you should ​know the basics of Python — e.g., you have already ​read ​my previous book "Coffee Break Python"​.

​​​We Want to Help You Thrive in Data Science!

​Christian Mayer

​Author Finxter.com

​​​As a doctoral computer science researcher, I have taught many students in computer science, graph theory, and distributed systems. 

My passions are writing, reading, and coding. But my #1 passion is to serve you​ -- as an aspiring coder​ -- through Finxter, and help ​you boost ​your ​coding skills. 

​Zohaib Riaz

​Software Developer

​I have recently completed my doctoral research in Computer Science at the University of Stuttgart, Germany. Most of my research work involved mining of ​human location datasets using machine-learning algorithms in Python and MATLAB.

​I want to help you master difficult technical concepts​ and would love to share ​with you my knowledge and skills regarding programming and data-mining.

​Lukas Rieger

​Cloud Operations Engineer

​​After my apprenticeship as a practical ​coder, ​I studied ​software ​engineering at University of Stuttgart​ where I worked together with Christian in distributed graph processing research. For the last years, I have been working as a developer and Cloud Operations Engineer​.

I discovered my passion for teaching computer science ​as a ​coding tutor. ​With this book, I want to share with you my love for Python ​-- because of its clarity, flexibility, and ​vast range of libraries!

Super Easy Practice Learning

The Jupyter Notebook contains all 44 puzzles of the book. This makes learning smooth, practical, and convenient!

Want a Sneak-Peek?

​The book ​is packed with 200 pages of in-depth NumPy information. Click to enlarge the pics and read more!

​How do YOU spend your Coffee Break? NumPy!

  • ​21​1 pages of packed, in-depth NumPy content.
  • ​4​6 educative code puzzles to test your skills and to make learning easy and fun!
  • ​10 tips for efficient learning​ to help you stop wasting time!
  • ​​1 NumPy cheat sheets to learn 80% of the language features in 20% of the space!
  • 1 accurate way to measure your coding skills because clarity is the first step to success!
  • [BONUS] 1 detailed NumPy tutorial for absolute beginners to get you started!
  • ​[BONUS MINI-COURSE] 8 in-depth video tutorials (2.5 hours) to help you digest the material easily.

​How much does it cost you ​NOT to ​possess your high-income skill data science?

​Boost Your Value to The Marketplace!

​​Have Your "Coffee Break ​NumPy" Now​!

Contains the following ​version of the eBook (​incl. free mini-course):

"Coffee Break ​NumPy: ​A Simple Road to Data Science Mastery That Fits Into Your Busy Life"

  • 1
    ​High-resolution PDF eBook optimized for large Desktop screens
  • 2
    ​​High-resolution ePub3 file optimized for ebook readers
  • 3
    44 Code puzzles as ​Jupyter Notebook
  • 4
    7 Python cheat sheets incl. NumPy cheat sheet (PDF)
  • 5
    ​8 NumPy videos with more than 2 hours of content

​​Your ​NumPy skills improve by ​>33%​​. Guaranteed.

​If you don’t think that the book is worth your time, you’ll get 100% of your money back ​for as long as ​​365(!) days after the purchase! Just like that. And you keep the book for free​.

​Promise: If you read this book, your ​NumPy skills will measurably increase by at least 33% or it’s free.

Here is how it works: You simply ​test your skills for free at ​the online Python training platform Finxter.com before and after reading.​

Here's why Pepe, one of the early book readers, appreciates the "Coffee Break" way of learning to code. Can you find the cat in the video?

Here's what an expert in the field thinks about this NumPy textbook

​Chris Cartwright

​Professional Editor and Python ​Consultant

​"Another great little Python book from Christian and his colleagues. As a practitioner in this field, I really appreciate the focus on real-world problems. I ​can see my coffee breaks will be full for some time to come!"

​​Have Your "Coffee Break ​NumPy" Now!


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