A loop is one of computer programming's most powerful concepts.  By asking a programme to repeat (or 'loop') a set of instructions until a certain condition is met, we can get HUGE amounts of work done.  In this lesson, we explore the 3 loop options in Excel VBA.  Do you absolutely need all 3?  Probably not, but we do use them in the workthrough video and, besides, learning Excel VBA is fun!