Funbooks seem to be few & far between these days. When you get to Vegas you will find coupon books in the cabs, at the concierge desk at your hotel, and your hotel may give you one when you check in. These come out weekly so there is no point in getting them until you get there.
If you join players clubs while you are there (and you should if you have not already!) sometimes they will give you a fun book at that time.
