Buku yang Dikarang by Ryan roffe

Coding for Kids

Coding For Beginners

Python Programming

Coding for Kids

Python Programming

C# for Advanced

Computer Programming

Mastering Coding and Cybersecurity

C++ for Beginners

C++ Programming

Programming for Kids

C# for Beginners

JavaScript

C# and C++

C#

Python for Kids

Arduino Programming

Cybersecurity

SQL

Java Programming

C++ Programming