Final answer:
Zaroff got started into hunting by becoming bored with hunting animals and cultivating a desire to hunt humans in the story 'The Most Dangerous Game'.
Step-by-step explanation:
In the story 'The Most Dangerous Game' by Richard Connell, Zaroff, the antagonist, got started into hunting through a gradual progression in his interests and pursuits. Zaroff was initially a big-game hunter who became bored with hunting animals that had no chance of survival against him. This led him to develop a twisted desire to hunt the most dangerous game of all - humans. He eventually creates a hunting ground on a remote island and lures shipwrecked sailors and hunters there to become his prey.