Bebe says Manchester United's Portuguese-speaking contingent are helping him settle.
Bebe was left out of United's first three reserve games of the season, but was included in the 25-man Champions League squad despite mistaken reports he had been omitted.
He told the Manchester Evening News: "I don't know when I will be ready for the first team. I need to work hard and a lot.
"I don't know when I will be ready for the first team. I need to work hard and a lot depends on the boss whether he calls me into the team or not.
"Sir Alex has told me he is very happy with me and he wants me to train more and get into the first team."
Bebe admitted United's interest - which came just weeks after he had moved to Guimaraes from Estrela da Amadora - and come as a surprise even to him, but said United's Portuguese and Brazilian contingent had already helped him settle in to life in England.
"I am very happy to be at Old Trafford but the big thing is to work hard so I can play," said Bebe. "I have settled in very well with the team but I need to work hard to move up to the first team.
"I can play on both sides, on the left and the right. It doesn't make any difference which side.
"It was a big surprise for me and for everyone when Manchester United signed me.
"It helps a lot having other players that speak Portuguese - Rafael, Fabio, Nani and Anderson are all my friends. Nani and Anderson help me the most.
"They help me because they speak Portuguese and they have come from abroad and they can help me to help the team."
