And programming computers was so fascinating. You create your own little universe, and then it does what you tell it to do. — Vint Cerf
Computer program (also software, or just a program) is a sequence of instructions written to perform a specified task with a computer. A computer requires programs to function, typically executing the program’s instructions in a central processor. The program has an executable form that the computer can use directly to execute the instructions. The same program in its human-readable source code form, from which executable programs are derived (e.g., compiled), enables a programmer to study and develop its algorithms. — Wikipedia
Programming language is any set of rules that converts strings, or graphical program elements in the case of visual programming languages, to various kinds of machine code output. — Wikipedia
As soon as we started programming, we found to our surprise that it wasn’t as easy to get programs right as we had thought. Debugging had to be discovered. I can remember the exact instant when I realized that a large part of my life from then on was going to be spent in finding mistakes in my own programs. — Maurice Wilkes, Memoirs of a Computer Pioneer
An apprentice carpenter may want only a hammer and saw, but a master craftsman employs many precision tools. Computer programming likewise requires sophisticated tools to cope with the complexity of real applications, and only practice with these tools will build skill in their use. — Robert L. Kruse, Data Structures and Program Design in C
Computer Science Field Guide: Programming Languages (Computer Science Education Research Group, University of Canterbury, Official Website)
Computer Science Field Guide: Coding Introduction (Computer Science Education Research Group, University of Canterbury, Official Website)
Here are links to pages about closely related subjects.