If you're not sure what "version control" is, Learn Enough Git to Be Dangerous won't even presume that you are familiar with the class of software.
Even if you are already knowledgeable about the topic, you probably still have a lot to learn from this course.
Git, the distributed version control system, has never had a better on-the-job partner. It offers a condensed, accessible introduction to Git for first-time users as well as a reference for those of you with Git knowledge with typical commands and procedures.