Hey! Aren't you dreaming? He says he just wants to learn how to sing and now you're mentioning Pavarotti?
Grk... Music is easy. You just need to feel it. With an hour a day you can get something decent in two months or less.
From there you will have to build a lot, of course... and I do mean a lot; but for a start, the best tip is not to try to be too demanding with yourself right from the start.
If you want to feel better, go to a Karaoke bar and discover there are dozens of people who sing worse than you will ever do and still enjoy it
I sing, play the flute and the guitar, and I don't do it bad. There's no need to suffer.