The Computer History Museum oral history interviews are a great first-hand resource about Apple (and NeXT's) past. I'd come across a few before (e.g. those with Avie Tevaian, Gary Davidian and Jon Rubinstein), but there are a lot more - I've found 61 interviews with folks who have worked at either company.

If you'd like to work through the entire collection, I've put together an RSS feed for your podcast player and a YouTube playlist if you want the video content too. This archived in my feed-scraping repo - that has additional machine-readable content about all episodes (extracted with Codex's help).