Alright, here’s one of many tutorial you will find here at SysadmindayPH. This post is all about how to turn your colorful pictures and images into black and white, or grayscale using GIMP …Of course using GIMP! 🙂
For those who do not know what GIMP is, is short GNU Image Manipulation Program. What’s GNU? It’s GNU Not UNIX. What’s GNU? It’s GNU Not UNIX.. What’s.. you know.
Most of the tutorials I’ll mentioned here is based / borrowed /stolen from this link, so be sure to check it out and bookmark that one too