Allen Park — Wednesday was almost like the first day at a new school for the newest Lions player, Josh Bynes.

The fourth-year linebacker was spending his first day at practice with the Lions after being signed from the Ravens' practice squad. Bynes, 6-foot-1, 240 pounds, will help fill the hole left by middle linebacker Stephen Tulloch, who will miss the remainder of the season after suffering an anterior-cruciate ligament injury against the Packers on Sunday.

Bynes played in 26 games in the past three seasons, including nine starts. He had 45 tackles in 15 games last year, with six starts.

His familiarity with the Lions' defensive scheme was one of the reasons he was signed; Lions defensive coordinator Teryl Austin was the secondary coach with the Ravens for the last three years.

"It makes it a little bit easy," Bynes said. "There are still some things I have to work on as far as learning the defense. That's why I'm asking some of the guys some of the small terminology."

But the newest face in the locker room didn't have any problems getting acclimated, except for trying to match names and faces of his new teammates.

"These guys are pretty good and all introduced themselves to me. It's been pretty open and pretty cool," he said.

With his knowledge of the defense, Bynes was able to jump right into practice. But he said he's been feverishly studying the Jets offense to try to learn their tendencies and ramp up his learning curve. He was impressed by what the Lions were able to do against the Packers on Sunday in a dominating win.

"I watched a little here and there over the last day or two. I've been trying to watch the Jets and also the play calls," Bynes said. "As far as what I've seen from watching the (Lions) film, they're fast, get after it and just a defense you want to play for. That's what you look forward to and that's why they're one of the best defenses in the league now."

Bynes played at Auburn and was a teammate of defensive tackle Nick Fairley, the one familiar face in the Lions locker room.

"I saw him when I came in and it's been good seeing him," he said. "I can't wait to get on the field and play with all the guys. I'm still learning a bunch of people's names and I'm not a names person."