Guadalajara's double decker sight seeing buses are run by Tapatio Tours and take you around town or out to local handicraft central village of Tlaquepaque. You can take both tours for $9 within 24 hours and can hop on and hop off the bus, similar to London's Original Bus. You'll get a pair of headphones with your ticket and can make the tour a guided one by listening to the English or Spanish commentary. These kinds of doubledecker tour buses are found in many international cities you'd like to visit -- take one anywhere they're found to learn that city's layout.
Mexico has excellent in-country buses, as well as a plethora of local buses ranging from not-so-converted school buses to beauty min-vans. And VW vans, of course. Check out some photos of Mexico buses.
How to Catch a Local Bus in Mexico
Stand by the side of the road or city street, looking into traffic, and raise an arm when you see a bus approaching -- it will probably pull over. You can usually get off by hailing the bus driver at any point along the bus's journey. The buses often run on a schedule; ask a local. The farther away from population centers you get, the farther apart buses will be (like hours or days), so ask someone, like a bartender or shop clerk, when the buses run in the area to which you're headed.
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