C programming language, developed in 1972, remains a widely used and valuable skill in the modern job market, especially for roles requiring cross-platform application development and hardware communication. Despite its age, C's simplicity and its ability to teach fundamental computing concepts make it an excellent starting point for beginners. It offers an easy transition to other languages due to its syntax influence on popular languages like Java and C#. Numerous free resources, such as The C Beginner’s Handbook and Harvard’s CS50 course, are available to learn C, along with tools for writing and compiling C programs on various platforms like macOS, Windows, and Linux. Additionally, C's role in extending other languages and its application in areas such as operating systems and device drivers highlight its versatility. Twilio's guide also introduces the possibility of using C in conjunction with its API to send SMS and MMS, showcasing a practical use case in IoT projects.