Before he turned 22, Root was set to lead the Lions in Australia last winter - an assignment which had to be revised when he was needed instead for the Test and limited-overs tour of New Zealand. On Thursday at Leicester, he will take on the same task in charge of a team hoping to impress selectors before the first Test at Lord's and briefed to soften up the Kiwis a little too.
Asked what he thinks the selectors have seen in him to name him as captain, even though he has precious little experience of leadership, he said: "I'm not really sure ... I would like to think I will be nice and calm and collected, just try and have a relaxed approach and hope that will work well with the dressing room we have got."
He added: "I have had a good winter and I have learnt a hell of a lot.
"I have just tried to take that into this summer and try to keep it as simple as possible and just try and bat for as long as I can. That has worked well me for me so far."
Root will bat at number three against opponents who pushed England so hard in the 0-0 stalemate after three Tests in New Zealand two months ago.
The young Yorkshireman has begun the new season in prolific form at the top of the order for his county, as he seeks to consolidate strides made in the past six months.
Root's learning curve, largely successful as well rapid, continues apace, and he said: "I have obviously picked things up over the winter, a bit of experience.
"Then there is the pressure of going back to county cricket and making sure you perform.
"It's been really enjoyable going back to Yorkshire and contributing to the side. I have got a lot of confidence from that and hope I can take that into the rest of the summer."