Yup, yup, check YouTube for instructions on how to use a snow blower. It isn't rocket science. I grew up and still live in the frozen wasteland of Michigan, so I've done a sh*tload and a half of shoveling and blowing (although not always snow).
If your dad doesn't like it, remind him of your heart condition and that he can pay for your hospital stay. No, you can't expect to live in your parents home without contributing, but they have to be reasonable as well.
Frankly I'm sort of with Virge... What father is asshole enough to have his son shovel a long driveway with a known heart condition? If he's really
that big a prick you're going to have to move out...AND TELL HIM WHY. Otherwise we're not getting enough of the whole story here.
(People say I have a heart condition as well, but the truth is I don't have one. They're such a bother, all that maintenance, eating healthy, having feelings, etc. Why bother?)