By Cat Silver Many expats who move to México arrive with a serviceable survival kit of Spanish. It may be fine for dining out, asking directions, negotiating a taxi fare, or chatting casually with neighbors. You feel confident. Capable. Yet when it comes to renovating or decorating a home, suddenly your Spanish fails you. Familiar words stop working. Questions are met with polite confusion. A quick purchase turns into a long explanation, and somehow you end up with the wrong