https://www.humblebundle.com/books/python-programming-no-starch-books
Humble Book Bundle: Python Programming by No Starch Press
-- Some of the books are targetted for learner/children.

4 days

   USD1 (about AU$1.48) or greater
Automate the Boring Stuff with Python
Invent Your Own Computer Games with Python
Black Hat Python
Python for Kids
Code Craft
   USD8 (about AU$11.86) or greater
Cracking Codes with Python
Doing Math with Python
Gray Hat Python
Python Playground
Teach Your Kids to Code
   USD15 (about AU$22.24) or greater
Serious Python
Impractical Python Projects
Math Adventures with Python
Mission Python

The "Keep Books Weird" bundle (6 days) may interest some.

https://www.humblebundle.com/books/information-technology-security-book
Humble Book Bundle: IT Security by Taylor & Francis
18 days

   USD1 (about AU$1.48) or greater
Understanding the New European Data Protection Rules
Intrusion Detection and Prevention for Mobile Ecosystems
Intrusion Detection Networks
Iris Biometric Model for Secured Network Access
Computer Security Literacy
The CISO Journey
   USD8 (about AU$11.86) or greater
Collaborative Cyber Threat Intelligence
Defense Against the Black Arts
Ethical Hacking and Penetration Testing Guide
Unauthorized Access
Big Data Analytics with Applications in Insider Threat Detection
Data Analytics for Internal Auditors
Responsive Security
Supply Chain Risk Management
   USD15 (about AU$22.24) or greater
Implementing Cybersecurity
Threat Level Red
Social Media Warfare
Web Security
Information Security Fundamentals
Security Strategy
Walling Out the Insiders
Security De-Engineering
Network and Data Security for Non-Engineers
Big Data Analytics in Cybersecurity