Barkley is pushing to start for England on Saturday against Italy.
"I will learn a lot," he insisted to evertontv. "I went to the World Cup with the Under-20s last summer and I learned a lot there - about the (tournament) environment, playing against the big countries.
"I've never been to South America, (I will learn about) the temperatures, preparing for games, being away from home; it will be a good learning curve for me and a great experience.
"After every tournament I feel I have learned something and I come back wanting to progress."
For the big stories and the banter follow us on Twitter: @tribalfootball