Pokemon X and Y O-Powers Locations Guide

Pokemon X & Y comes with a nifty little feature called O-Powers, which are bonuses you get after leaving Lumiose City—the earliest part of the game. You get a list of them, which is accessible through your WiFi connection screen as one of the three options in your lower touch screen.

When you select an O-Power, it will activate a temporary power up. For example, selecting Attack Power will temporarily raise your Pokemon's attack stat, and you will have an energy bar that the powers draw from that regenerates over time. 

In addition, you can provide your friends and people around you with boosts from your own O-Power. 

Here's where you'll have to go to pick up new O-Powers, and what each power  does:

Route 5 (Attack, Defense, HP, & Capture)
Camphrier Hotel, second floor, far right room (Sp. Atk)
Ambrette Hotel (Sp. Def)
Cyllage Hotel (Prize Money)
Geoseng Hotel (Speed)
Shalour Pokemon Center (Critical)
Cormarine Pokemon Center (Befriending)
Lumiose Hotel Richissime, on North Blvd, between routes 16 and 14, near Hibernal Avenue (Bargain)
Laverre Pokemon Center (Encounter)
Dendemille Pokemon Center (Accuracy)
Anistar Pokemon Center (Exp Point)
Couriway Hotel (Stealth)
Snowbelle Pokemon Center (PP Restoring)
Lumiose Cafe Introversion, on South Blvd, between route 4 and 5, near Vernal Ave Max Style and all other O-powers required (Hatching)

via Reddit.