MIT's OpenCourseWare program has been a hit over the past few years, and people from around the globe have written in to praise the high-quality and free educational materials offered on the site. One of the more recent offerings is this introductory course on electrical engineering and computer science. After conversations with colleagues and OpenCourseWare users, MIT decided to create a course for beginners. The materials here include lecture videos from the spring 2011 iteration of the course, recitation videos, course notes, software and design labs, and homework assignments. The topics covered include software engineering, circuits, and signals and systems. Visitors are encouraged to download the course materials and to offer feedback to the OpenCourseWare team.