Dive into a comprehensive tutorial series on Objective-C for iOS and Mac development. Master fundamental data types including Bool, Floats, Integers, Enums, and Bitmasks. Explore essential concepts such as initializers, classes, methods, and properties. Gain proficiency in protocols, delegates, memory management techniques, and Automatic Reference Counting (ARC). Delve into advanced topics like categories, runtime, and blocks. Through 2.5 hours of in-depth instruction from raywenderlich.com, acquire the skills necessary to build robust applications for Apple platforms.