The Brazil international completed his £29million switch to the Reds last month while on Copa America duty.
Firmino has since been given a two-week holiday to recharge his batteries ahead of the new season.
And the 23-year-old can't wait for the challenges in store at Anfield.
I’m excited to see what the Premier League has to offer
Roberto Firmino
He said: "First and foremost, I’m looking forward to the new challenge and I’m excited to see what the Premier League has to offer.
“Of course everything will once again be new to me at the start.
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Roberto Firmino can't wait to get going at Liverpool
"I’m going to have to get used to a new playing style, but I’ll also get the opportunity to improve my game even further there.
"Obviously I’d like to establish myself as a starter in my new team and go on to celebrate a lot of success at Liverpool.”
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