That’s where Design Concepts for Engineers, 5th Edition comes in. And while the search for the PDF is often about saving a few dollars, the value of this text is about something far more profound. It’s the bridge from student to maker .
Most non-engineers think creativity is a blank canvas. Engineers know creativity is a locked room. Cost, materials, time, ethics, safety, manufacturing limits... the 5th edition doesn't ask you to ignore these; it asks you to worship them. When you read the case studies in this text, pay attention to the "failed" designs. They didn't fail due to bad math. They failed due to ignored constraints. Learning to dance inside the cage of reality is the highest form of professional art.
That is the design concept. The PDF is just the key.