After a £30million move from Benfica, Lindelof endured a largely underwhelming first 12 months in Manchester – starting just 13 Premier League games after making his debut in October.
Lindelof eventually began to adjust at Old Trafford and started to command a more regular first-team spot under Mourinho towards the end of the season.
His form also led to reports last month that the Portuguese manager could sanction a season-long loan move to newly-promoted Wolves.
Yet Sweden international Lindelof, who has 20 international caps, is confident that he travels to Russia next week with confidence despite an up-and-down first year in England.
“I’ve learned a lot of things, it’s been a good year for me,” the 23-year-old told Reuters.
“I’ve been playing with a lot of good players and I’ve been learning a lot from my coach, Jose Mourinho, so there’s a lot I’ve learned this season.
‘It’s one of the toughest leagues in the world, every game is very tough. I think that’s very good for players, it’s important and you improve a lot day-by-day.”
Sweden face South Korea, Germany and Mexico in Group F and Lindelof believes his year in the English top-flight will aid him as his nation hope to reach the knockout stages.
“I know the players that we are going to play against because they play in the Premier League,” Lindelof said.
“I’ve played against them and I know what type of players they are.”
Sweden face Peru today (6.15pm) in a final warm-up friendly before travelling to Russia to begin their World Cup campaign.