Dimi's first Reds treble took his tally for the season to six and he hailed Ferguson as "one of the most successful managers in the history of the game".
"I write things down about the way we train and how he treats people. It is like a school," he said. "You work with the best manager and play with the best players. I try to learn. I am at the biggest club in the world. If I can learn anywhere it is here."
Meanwhile, Brazilian defender Lucio, who played alongside Berbatov at Bayer Leverkusen, says the Reds frontman is up there with the best players in the world.
"With the natural ability that guy has, we could be talking about him being the world player of the year this season," said Lucio.
"I've played with Kaka, Ronaldinho, Wesley Sneijder – and Berbatov is as naturally gifted as any of them. It took him time to adjust at United but, once he did, I was always confident he would hit this sort of form.
"He is now entering his peak years and I am sure he will get better and better"