You should read his bio by Isaacson. Firstly, Jobs did have a tech background he worked at Atari and HP as programmer and engineer tech. He was no Woz but he had enough ability to see what Woz was capable of (back when they were both teenagers.)
Ultimately, through failures, he learned how to be successful CEO. He turned around apple at the request of board member Woolard in '97 after the board canned Gil Amelio. He didn't want to go back to Apple as he was CEO of Pixar at that time. He killed the Newton to get engineering focus on better tech, namely iPad and iPhone, imac, MacBooks etc. The i prefix came about because Jobs was interim titled CEO at the time.
Jobs did a lot for the microcomputer world. he was not at easygoing person for sure but his internal struggles gave him the ability to focus intensely and drive himself and others to peak performance.
To the glib first poster - I hope you never have a terminal cancer diagnosis. Devastating news. Even educated, well-off people may turn away from traditional therapy because it can't keep up with rapidly advancing metastasis. Says a lot about the world that this is still true.