Everyone associates Steve Jobs with Apple and the Macintosh, but it was Steve Wozniak that made the intial magic happen with the Apple I & II. Here's an interview with Woz about those early days, and a book due out soon about him.
Andy Hertzfeld was another Apple hacker that worked on the Mac version 1 system software. He's got a website, folklore.org with loads of behind the scenes stories on the creation of the Mac. Here's a video of him giving a tech talk about the early Mac at his new company, Google.