Douglas Harper's Etymology Dictionary
Wiktionary
first-timer
n. a person engaging in any activity for the first time
Usage examples of "first-timer".
He knew that Rooie had been one of the few prostitutes who went out of her way to do a kindness for the first-timers.
The first-timers took turns on the winding road beside the Eagers, a repetitive canon on one simple theme.
First, I have found that a kind of universal inverse ratio applies, so that only about half of the first-timers respond again, and only half of the second-timers, and so on, so that the correspondence tends to damp out.
You'll find tales here by some Repeat Offenders as well as by some First-Timers.