One of the great ones is 'Iron Man: Extremis'. It re - imagined Iron Man's origin in a really cool way. Another is 'The Invincible Iron Man' which has some epic battles against the Iron Monger. And 'Iron Man: Demon in a Bottle' is also a classic that delves deep into Tony Stark's personal struggles while dealing with threats like the Iron Monger.
You can try your local comic book stores. They usually have a good selection of Iron Man graphic novels, including ones related to the Iron Monger. Some big chain bookstores might also carry them in their graphic novel sections.
Iron Fist belongs to Marvel. He has his own unique story and powers within the Marvel comic book world, and has also appeared in related media adaptations.
Iron Man's fate varies in different Marvel Comics story arcs. But in certain ones, unfortunately, he does die. It often depends on the creative direction and plot developments.
There are a few versions of the Iron Fist character in Marvel Comics. But it's not a straightforward number as it depends on different storylines and continuities.