Don't Make Me Think is a book by Steve Krug about human–computer interaction and web usability.
[1] The book's premise is that a good software program or web site should let users accomplish their intended tasks as easily and directly as possible.
The goal, according to the book's introduction, was to make a text that could be read by an executive on a two-hour airplane flight.
Originally published in 2000, the book was revised in 2005, and again 2013 to add a section about mobile UX, and has sold more than 700,000 copies.
In 2010, the author published a sequel, Rocket Surgery Made Easy, which explains how anyone working on a web site, mobile app, or desktop software can do their own usability testing to ensure that what they're building will be usable.