Tried to take a taxi to downtown, we wanted to see the happenings in Tijuana. The driver left us off at a mall. American chain stores, not what we were looking for but enjoyed seeing the Mexican families out for the day.
Revolucion is the main shopping street in Tijuana. There are fixed price stores selling clothes, perfumes, shoes, whatever you want and there are the usual curio shops selling typical Mexican crafted goods.
Some of the best buys are Leather; jackets, purses, hats and so on. Turquoise is pretty cheap and Silver jewelery which comes from Taxco is sold at very reasonable prices.
Avenida Revolucion in downtown TJ and Zona Rio to the east of downtown are the two main tourist shopping areas, but if you want to see a bit of the local areas, you need only walk a block on either side of Revolution you will find many interesting stores. Also, the Mercado Hidalgo is a true Mexican market and the prices are "localized."
Other main shopping streets are Caliente Boulevard and Paseo de los Héroes. Overall there is eight-blocks of stores, stalls, arcades and underground passage-ways filled with bargains from all over the world.
There are numerous street vendors with their goods for sale put on tables on the ramp of the bridge over Tijuana River. Hmm... really the best - crowded and covered (no sun, no rain) - place to do business. Am I wrong?
There are plenty off sellers operating off blankets on the sidewalks. A lot of Indian women selling trinkets and handcrafts for minimal amounts, you'll be able to find plenty of Mexican bargains here.
You will find plenty of Mexican handcrafts from handwoven garments and rugs, silverware, traditional costumes and pottery, amongst others.