add Feature Engineering book and Ethereum Blockchain Developer course (#10931)

* add blockchain developer bootcamp course

* add feature engineering book

* Update free-programming-books-subjects.md

Co-authored-by: Eric Hellman <eric@hellman.net>

---------

Co-authored-by: Eric Hellman <eric@hellman.net>

books/free-programming-books-subjects.md

@@ -263,6 +263,7 @@ Books that cover a specific programming language can be found in the [BY PROGRAM
 * [Data Mining Concepts and Techniques](https://ia800702.us.archive.org/7/items/datamining_201811/DS-book%20u5.pdf) - Jiawei Han, Micheline Kamber, Jian Pei (PDF) (:card_file_box: archived)
 * [Data Science at the Command Line](https://datascienceatthecommandline.com/2e/) - Jeroen Janssens
 * [Elements of Data Science](https://allendowney.github.io/ElementsOfDataScience/README.html) - Allen B. Downey
+* [Feature Engineering and Selection: A Practical Approach for Predictive Models](https://bookdown.org/max/FES/) - Max Kuhn, Kjell Johnson
 * [Foundations of Data Science](https://www.cs.cornell.edu/jeh/book.pdf) - Avrim Blum, John Hopcroft, Ravindran Kannan (PDF)
 * [Fundamentals of Data Visualization](https://clauswilke.com/dataviz/) - Claus O. Wilke (HTML)
 * [Hands-On Data Visualization](https://handsondataviz.org) - Jack Dougherty, Ilya Ilyankou (HTML)

courses/free-courses-en.md

@@ -318,6 +318,7 @@
 * [Build an IoT Blockchain Network for a Supply Chain](https://cognitiveclass.ai/courses/blockchain-iot-node-red-food-network) - CognitiveClass.ai
 * [Build and Deploy Your First Decentralized App with Etherem](https://www.udemy.com/course/your-first-decentralized-app/) - Gary Simon (Udemy)
 * [CryptoZombies.io](https://cryptozombies.io) - CleverFlare, Loom Network
+* [Ethereum Developer Bootcamp](https://www.alchemy.com/university/courses/ethereum) - Alchemy University
 * [Learn Blockchain](https://www.youtube.com/playlist?list=PLlp912GlUiC1xPnwVmKgIiuMERetMwre9) - Roomyan
 * [Solidity, Blockchain, and Smart Contract Course – Beginner to Expert Python Tutorial](https://www.youtube.com/watch?v=M576WGiDBdQ) - Patrick Collins (freeCodeCamp.org)