Massaquoi toured the country to meet with a who's who of receivers, including Chad Ochocinco, Hines Ward, Larry Fitzgerald, Calvin Johnson and Wes Welker, The Plain Dealer reported.
"I'm looking at this as a fresh start and I wanted to learn from the best," he said this weekend. "I wanted to be able to start from scratch and be able to use what they know to help me."
"None of them have big egos. They're all trying to get better and perfect their craft. In doing so, you get to see them correct their mistakes. They're coaching you up as they're improving their own game.
"There's a reason that they're in the league as long as they are. You really can't fix what you don't know. You see how those guys go about their business, how they work, how they're running routes and how they're adjusting to certain things and it's completely different."
The Browns spent a second-round pick on Massaquoi in 2009. With 70 catches and five touchdowns after two seasons, he has yet to elevate a passing attack that ranked last in the league in 2009 and No. 29 in 2010.
Massaquoi's offseason homework comes as the Browns shift to the West Coast offense, a change the former Georgia star backs wholeheartedly.
"I'm really excited about it," Massaquoi told the newspaper. "You wish you could've come into a more pass-happy offense from the start, but now that it's here, you embrace it and have fun."