The Paraguayan centre-half has linked up with former Latics boss Roberto Martinez at Goodison Park and is again looking forward to life under the Spaniard.
"I know him really well and he knows me very well also," Alcaraz told evertontv.
"We had a very good relationship in the three years at Wigan and I want to continue that. Nothing is going to change, he is very professional.
"I have learned many things with him. He gave me a lot of support when I came here, when I was new in this competition. It is totally different and he gave me many lessons on how to adapt to this type of football.
"Thanks to him I adapted quickly to English football. There are many things I can say thank you to Roberto for, for my years here in England."