Assuming it is white to move, Bxd6 just claims a free pawn.
breaking down the defense
White moves are highlighted in blue black moves are highlighted in red.
you could possibly pin blacks knight to the king with your bishop to b5 this would also trap blacks queen within its defences.
from this position if black may threaten you bishop with pawn to a6 when they do that move your rook to a1 they will take your bishop by capturing with pawn to b5 and inturn free up space for their rook but your rook that you moved to a1 is guarding your pawn at a2 so more than likely they wont advance the rook. Next move your queen and capture pawn at b5. With your queen there it pins the knight to the king traps black's queen within the defences. also eventhough the a lane is esentualy open anywhere the rook goes it is in danger of being taken.
hope this helps not much but is a start.

White moves are highlighted in blue black moves are highlighted in red.
you could possibly pin blacks knight to the king with your bishop to b5 this would also trap blacks queen within its defences.
[EDIT: I've snipped a bunch here, executive summary: Bb5 a6 Ra1 axb5 Qxb5]
hope this helps not much but is a start.
Your suggestion is to sacrifice a piece for no real reason. Black can just play Ra6 driving the queen away from b5.
I'm sorry to have to be so blunt, but this advice is really bad.
Don't overthink here. You're well mobilized, and your opponent is passively placed. You've got an unprotected central pawn that you can nab, and I'm not even sure black can put any pressure on the attacking piece after the fact. But even if he does, you regroup, and you're STILL more actively placed, as well as ahead a central pawn.
This position is crushing for white.

i would recommend taking a look at the 150 attack. despite beeing very dangerous its not hard to learn.

americanfighter, you haven't sacrificed one pawn, you have sacrificed one bishop. A bishop is much more powerful than a pawn.
Also, the pin of the knight is only temporary as black can play Ra5 forcing your queen to retreat. I don't know why you say the black queen is trapped. The black rook, meanwhile is on a half open file while the white rook does nothing but babysit the a-pawn.

to start nb5 to threaten a bishop king fork on the free pawn and to add defense to your d pawn while taking away a possible later attack on your knight. if a knight protects the pawn move your other knight to g5 and attempt to crush the king side defense most likely a castle will follow, take the e pawn forking the rook and the queen, this is a sacrifice then retake with your bishop.(if the player does not castle, take it anyways) after this there are strong attack possibilites and the king will be wide open for the rest of the match. you may be down 1 pawn but the game could end abruptly if played right. 2 bishops raining down on the unprotected king with rooks and a queen close behind on 2 possibly half opened files along with a possible protected passed pawn. give it a shot its what id do. set your opponent up for failure while gaining momentum.
ive got all my pieces (white) mobilized at this point, and im wondering where the best place to start the attack is. attack with bishops? get knights to outposts? press forward with pawns? any attacking ideas would be very helpful, as i have gotten stuck at this point in the opening alot in the past. thanks!