It’s fashionable to talk about how much Pittsburgh is changing, but somebody out there is watching "Pittsburgh Dad," the three-year-old, surprise-hit YouTube video series about an unreconstructed blue-collar guy perpetually exasperated by his wife, kids, friends and neighbors and schooling them with unsolicited advice. (“Why did I lock all the doors? Why the hell you would be trying to open them when the car is moving is the bigger question!”)

Now the series has spun off into a book, and co-authors Chris Preksta and Curt Wootton are doing two appearances at local stores this week.

Tonight, find director Preksta and star Wootton (no doubt in wire-rims-wearing character) at the Barnes & Noble at the Waterfront at 7 p.m. for a book talk and signing. And on Saturday, the guys visit Sewickley’s Penguin Bookshop from 2-3 p.m.

Pittsburgh Dad: Everything Your Dad Has Said to You (Penguin Random House) is $14. Pittsburgh accent not included.

The B&N is at 100 West Bridge St., in Homestead. Penguin Bookshop is at 417 Beaver St.