The former Crewe Alexandra midfielder joined Villa in August.
"It was daunting at first but when you get out there you just forget about that and get on and play the football," said Westwood to Villa's website.
"Training is lightning. That is the big thing I noticed - the training is so intense and every day you have got to be on it. You can't afford to cruise through training here.
"To be fair to the other lads they have been brilliant. It has felt like home straight away, I've been made to feel really welcome.
"I can't really pick one individual out - they have all been welcoming.
"I sit next to Matt Lowton in the dressing room. He is my age and he has come from the lower leagues so he is one that I've spoken to more."