How to beat the Fianchetto?

Which book would you recommend to beat the Fianchetto?

Kill it with the same color bishop

Which fianchetto?

Many ways to play a fianchetto, if we dont know which one...

Pawn chains are also good for blocking the long diagonal

Look at games in the database where the same opening is played as the games that you play where the fianchetto appears. For example if you are playing against the KID and want to know how to play against this defense go to the database. Same for the dragon or whatever. 

Can you let us know which games this technique appears in so we look them up in the databases? Or better yet why not publish the games that you are referring to.

I played a game recently in which I turned my opponent's fianchetto B into a sitting duck. I'll post it if you like.

Two main ways to neutralise fianchettoed bishops; try and trade it off for you bishop which may leave weaknesses eg. if they played g6 and Bg7 you could play Be3 Qd2 and Bh6.  After the trade black's kingside dark squares are weakened due to the g6 move.

The other way is to block it.  As posted by Charetter a good way of doing this is setting  up a pawn chain along the bishop's diagonal.  This often leads to a scenario where the bishop is "biting on granite" ie.  it's not really putting meaningful pressure on the pawns and just lacks scope.  

You can also sometimes force your opponent to block their own bishop; eg. if they play g6 and Bg7 if you could somehow force them to play e5 they block their own bishop and this can sometimes be even more effective than blocking the bishop with your own pawns because your opponent may be able to capture your pawns, but he can't capture his own so in certain scenarios the bishop may be permanently blocked. 

Another way to deal with a fianchetto is to move all your own pieces and pawns off the diagonal so that the bishop is now biting on air. Now that I think about it Nimzovich writes about fianchettoed bishops in his book "My System."

Trade it for the rook in the corner while keeping the bishop pair.

I've done this in the dutch defense both otb and online blitz. It may not always be correct but it can lead to fun wild play

 Edward Lasker's book "Chess Strategy" is available for free on the internet.

https://ia600400.us.archive.org/30/items/chessstrategy05614gut/chsst10.txt

tag for later.

This is how to mate a fianchetto castle. Obviously in a real game it will be harder to reach such a position as white wont make it this easy for you.

This one: https://www.amazon.co.uk/Fianchetto-Solution-Complete-Flexible-Repertoire/dp/9056916637/ref=sr_1_sc_1?ie=UTF8&qid=1502356325&sr=8-1-spell&keywords=fienchetto

One of the best ways is capturing the bishops.

I find locking the centre works the best, especially if they try a Kings Indian.

so something like this?

nah just h4 when they play g6 . You create a pawn storm to break the defense and you simply keep attacking on king's side and castle queen side. Try to open files for your rooks and sac pawns if you need to. Avoid closing the position on kingside because you would be losing. I also like to have the bishop on c4 to help aid the attack by pinning the pawn on f7 to the king on g8. Last thing is to never ever trade queens.

I find the kingside attack creates too many weaknesses in my own position. I love your reasoning behind pinning the f7 pawn. Will keep this in mind. Thanks!

With white you no need to worry much, but with black you should restrict it by your central pawn chain....