Servicio Colectivo is the airport minibus stationed outside the terminals, which takes you to the city center, comes around every hour and takes about 35 minutes. You can purchase tickets at its booth located outside of Arrivals. NOTE: These minibuses are not for the faint-hearteds - squeezed into it, they drive at high speed & at times do not stop on request!
Turquesa (turquois) buses 700 - 707 are full-sized, airconditioned with TVs; the fare is about the equivalent of one dollar.
Guadalajara city has two bus stations - short-distance buses depart from the south of the central downton area.
Long-distance buses depart from the huge Central Camionera (with 7 connected buildings) - which is 6 miles south of downtown, only reached by taxi. TIP: First agree on the taxi fare, then tell the driver you want to go to 'Central Camionera para [add your destination]' - he will know which terminal you will need.