The main thing you need to know about instructions is that no one is going to read them - at least not until after repeated attempts at "muddling through" have failed.

The main thing about instructions 

Offers observations and solutions to fundamental Web design problems, as well as a new chapter about mobile Web design.

books

Books

Since Don't Make Me Think was first published in 2000, hundreds of thousands of Web designers and developers have relied on usability guru Steve Krug's guide to help them understand the principles of intuitive navigation and information design. Witty, commonsensical, and eminently practical, it's one of the best-loved and most recommended books on the subject. Now Steve returns with fresh perspective to reexamine the principles that made Don't Make Me Think a classic-with updated examples and a new chapter on mobile usability. And it's still short, profusely illustrated...and best of all-fun to read. If you've read it before, you'll rediscover what made Don't Make Me Think so essential to Web designers and developers around the world. If you've never read it, you'll see why so many people have said it should be required reading for anyone working on Web sites. "After reading it over a couple of hours and putting its ideas to work for the past five years, I can say it has done more to improve my abilities as a Web designer than any other book." -Jeffrey Zeldman, author of Designing with Web Standards

Steve Krug

Don't Make Me Think, Revisited

When external signifiers - signs - have to be added to something as simple as a door, it indicates bad design.

What is bad design

1. Use both knowledge in the world and knowledge in the head. 2. Simplify the structure of tasks. 3. Make things visible: bridge gulfs between Execution and Evaluation. 4. Get the mapping right. 5. Exploit the power of constraints. 6. Design for error. 7. When all else fails, standardize.

Principles of design 

Good designers never start by trying to solve the problem given to them: they start by trying to understand what the real issues are.

How good designers solve problems

Design doesn't have to complicated, which is why this guide to human-centered design shows that usability is just as important as aesthetics. Even the smartest among us can feel inept as we fail to figure out which light switch or oven burner to turn on, or whether to push, pull, or slide a door. The fault, argues this ingenious -- even liberating -- book, lies not in ourselves, but in product design that ignores the needs of users and the principles of cognitive psychology. The problems range from ambiguous and hidden controls to arbitrary relationships between controls and functions, coupled with a lack of feedback or other assistance and unreasonable demands on memorization. The Design of Everyday Things shows that good, usable design is possible. The rules are simple: make things visible, exploit natural relationships that couple function and control, and make intelligent use of constraints. The goal: guide the user effortlessly to the right action on the right control at the right time. The Design of Everyday Things is a powerful primer on how -- and why -- some products satisfy customers while others only frustrate them.

Design doesn't have to complicated, which is why this guide to human-centered design shows that usability is just as important as aesthetics.   Even the smartest among us can feel inept as we fail to figure out which light switch or oven burner to turn on, or whether to push, pull, or slide a door.   The fault, argues this ingenious -- even liberating -- book, lies not in ourselves, but in product design that ignores the needs of users and the principles of cognitive psychology. The problems range from ambiguous and hidden controls to arbitrary relationships between controls and functions, coupled with a lack of feedback or other assistance and unreasonable demands on memorization.   The Design of Everyday Things shows that good, usable design is possible. The rules are simple: make things visible, exploit natural relationships that couple function and control, and make intelligent use of constraints. The goal: guide the user effortlessly to the right action on the right control at the right time.   The Design of Everyday Things is a powerful primer on how -- and why -- some products satisfy customers while others only frustrate them.

Don Norman is an accomplished writer whose work has resonated with readers around the world. Don Norman has published several books that explore a range of topics, from fiction to nonfiction, and has received critical acclaim for the ability to weave compelling narratives. Don Norman's writing style is known for its depth and authenticity, and has earned quite a loyal following of readers.

Don't Make Me Think, Revisited

The Design of Everyday Things

Laima