John Aloisi says he arrives at the Brisbane Roar as a better coach than he was during his time at the Melbourne Heart.

Aloisi's appointment was met with negativity by many Roar fans due to his poor record in his only other stint as a head coach with the Heart.

The former Socceroo lost 24 of his 39 fixtures as Heart coach and at the time of his sacking the team was rooted to the bottom of the table after going 17 matches without a win.

"It was my first job as a head coach, so you learn from the mistakes you make," Aloisi, speaking at his first media conference since taking up the Roar job from interim coach Frans Thijssen, said of his last tenure.

"You probably learn sometimes when you're not successful. You have to look back and see what you didn't do so well.

"I'm really excited about coming to Brisbane Roar and coaching such a talented bunch of players.

"I've been watching from afar, played against them, coached against them, and it was never easy.

"They've been so successful over the years and I want to help them be successful again."

Since being dumped by the Heart, which has since transformed into Melbourne City, in December 2013, Aloisi said he had learned a great deal about coaching.

The 39-year-old has spoke widely to wise heads such as Ange Postecoglou and observing first-hand how successful teams like Spanish heavyweights Barcelona operate.

"Since then I've been able to spend this time pretty wisely, speaking to people that have been successful, like Ange," Aloisi said.

"Ange has been great for me, a mentor.

"I went overseas, spent time with quite a few clubs overseas.

"And able to work on Fox Sports, analysing games, watching the boys play a lot.

"And also coaching the young boys at Melbourne Victory. I really enjoyed working with younger players, I think that's made me a more rounded coach."

Aloisi wants to preserve Roar's style of play

The Roar won three championships in four years under Postecoglou and Mike Mulvey by playing a possession-based, attacking brand of football, and Aloisi said he intended to carry forward that legacy.

"Brisbane Roar have it in their DNA to dominate the game, and that doesn't just mean keeping possession for the sake of keeping possession," he said.

"It means that you take the game to the opposition to hurt them.

"That's another reason why I wanted to come here, because wherever I've gone to study the game has been at clubs that play that way.

"I spent a lot of time at Barcelona, and I'm not saying that we're going to play exactly the same as them, but they've had to play that style because that is in their DNA. Brisbane Roar is the same."

Outgoing Roar chairman Chris Fong said Aloisi would oversee a fresh start for the club, following a tumultuous 2014/15 season.

"This marks the start of an exciting new era for us, a re-boot as such," Fong said.

"And it's certainly a change of direction that we've been going for the last year or so and we're very excited that we've made this decision, to go with John."