This text is the first to teach programming with Scala, one of a new generation of languages that combine the best from the procedural, functional, and object-oriented paradigms of programming. The first part of the book covers basic logic and problem decomposition and explains how to use GUIs and graphics in programs. The second part incorporates the core topics of object-orientation with a heavy focus on abstraction for constructing basic data structures, including stacks, queues, linked-lists, trees, and heaps. The text also introduces multithreading and networking.