If you have a few hours to spare, you could do a lot worse than to spend them watching the three episodes that make up Triumph of the Nerds, a 1995 documentary charting the history of the microcomputer industry.
From the Altair 8800 through the Apple II to IBM’s PC and the dominance of Microsoft, there are tonnes of lessons about what it takes to make technology companies succeed.
As I say, well worth a watch. Just to be helpful, I’ve embedded them below.
Part 1
https://www.youtube.com/watch?v=HuBXbvl1Sg4
Part 2
https://www.youtube.com/watch?v=PWylb_5IOw0
Part 3
https://www.youtube.com/watch?v=VjDofliudFY