The Ducks return from their break against the Toronto Maple Leafs at Honda Center on Friday (10 p.m. ET; FS-W, TSN4, NHL.TV).
Ritchie has 22 points (11 goals, 11 assists) in 61 games this season and is enthused by Getzlaf's mentoring.
"He's really good with that," Ritchie said. "He's almost like a personal coach on the ice. He's calling the plays and helping us when we get off on what the play should be. He's got a lot of insight on different things, and he's been really good.
"He's a veteran guy, a leader, a captain and those are some of things he does with the younger guys, and everybody on the team."
Among his 11 goals, Ritchie has scored three game-winners, averaging 13:12 of ice time per game. He has 123 shots on goal, averaging more than two per game.
"I got a chance last year to play just over 30 games and had some ups and downs," he said. "That's tough to come into the NHL and play right away. This year I took another step and became more comfortable and I think it has showed on the ice, the familiarity with different guys, and just getting some games under you is the main thing. Now it's starting to feel really good."
In his rookie pro season of 2015-16, the Orangeville, Ontario, native split his time between the Ducks and San Diego of the American Hockey League. He was recalled four times.
"I was lucky last year," Ritchie said. "You never want to go down, but when you do, you go and work to try to get back up. It has helped me in the long run, I think, and helped me grow as a player this year."
A big bonus for Ritchie is he's able to share the early days of his NHL career with older brother Brett Ritchie, 23, a right wing with the Dallas Stars and also in his first full-time NHL season.