1. Why the name Apple?
When they made this question to Steve Jobs in 1980, he replied that part was because he liked much apples.
But also because, with that name so simple and quirky, Apple, appeared before the then giant Atari in the phone book. Jobs company for which they worked.
The problems began when the Beatles presented against Apple in 1978. In particular, was the company Apple Corps owns its record label Apple Records, who set the demand for infringing trademark rights.