Since Claude Julien took over as coach in 2007, the Bruins have lived through the gamut of NHL playoff experiences.

They’ve been the scrappy underdog and overwhelming favorite. They’ve been derided as chokers and hailed as champions. They’ve stared down ignominious defeat that could have torn the team apart and lived to tell about it, more than once.

And as the Eastern Conference finals shift to the Garden for a pivotal Game 3 tonight, the B’s hope to draw on that vast reservoir of experience to keep their focus while trying to take a commanding 3-0 lead in the series.

If they can protect the series lead they way they protected the lead in their stunning 6-1 victory over the Pittsburgh Penguins in Game 2, the Bruins should be in good shape.

“We’ve been through a lot over the years. There was the series against Philly (in 2010) when we were up 3-0 in Game 7 and we lose. There was the series two years ago against Tampa in Game 4 where we were up in the game 3-0 and they came back and win that game. I think with everything we’ve gone through as a team, we don’t want to take anything for granted,” winger Milan Lucic said after Monday night’s win.

“When you get a lead like that in a game, you don’t want to take it for granted. And when you have a lead like this in a series,we’re happy we got the two wins, but we have to refocus and have the same attitude we had going into this game.”

The B’s have been right where the Penguins are now. Two years ago, they lost the first two games at home to the Montreal Canadiens only to wriggle off the hook, win that series and then go on to win the Stanley Cup. Lucic knows Pittsburgh faced two 0-2 deficits in their run to the Cup in 2009, though they opened on the road in both those series (Washington and Detroit).

Coming home should be a boost for any team, but it doesn’t always work out that way. The B’s won’t be wearing the us-against-the-world cloak they do on the road that can be so helpful at times. Instead, they’ll be riding a wave of emotion from the 17,565 Garden fans, and that can be tricky sometimes. In Game 2 at the Consol Energy Center, the B’s were as composed as they’ve been all year, allowing the Pens to take fruitless runs at them while the B’s simply moved the puck where they wanted to.

The B’s cannot allow the home crowd to blur that focus, which is where that experience of highs and lows should come into play.

“You can’t take it for granted, you can’t get complacent, you can’t be satisfied with what you’ve done,” Lucic said. “It’s a big two wins, but it’s just two wins and there’s a long way to go. They have more than enough character in their room to fight their way back. As every game goes along in these playoffs, each game gets bigger and bigger and this is a huge game for both teams.”