"It's been different having the opportunity over this time to move and to, for example, study my playbook - I mean I really haven't had to do that in 19 years, so you forget, 'Man, that's really tough,' like all of the different terminologies," Brady said Thursday, according to Jenna Laine of ESPN. "You're going back a very long time in my career to really have to put the mental energy in like I did."
Learning new plays isn't the only hurdle Brady is facing so far during training camp.
"You're trying to learn a bunch of different things and you're trying to not only learn an offense, but learn your way to work or learn guys' names," Brady said. "I didn't even know where the quarterbacks' room was or (where) the full-team meeting room was.
"Every day that goes by it's getting a little bit better," he added. "I'm glad we're not playing a game this Sunday - I'm glad we have time to prepare."
The Buccaneers signed Brady to a two-year contract this offseason after the signal-caller spent two decades as a New England Patriot, with Bill Belichick his head coach the entire time.
Brady also worked with the same offensive coordinator and quarterbacks coach in Josh McDaniels from 2012 to 2019.
The 43-year-old has been trying to improve his chemistry with his new teammates. In April, he conducted multiple private workouts with his new pass-catchers at a high school field.