Adobe InDesign Courses
The first version of InDesign was released in 1999, when the market leader for desktop publishing was QuarkXPress. Version 1 didn't kill Quark, but the much improved second version was aggresively marketed and almost overnight the whole industry left Quark in favour of InDesign. It has now been the market leader for almost 20 years and continues to be the go-to tool of choice for the publishing industry.