Dental work abroad?

For anyone who has ever accomplished getting major dental work, specifically veneers or dental implants abroad, I would like a step by step direction on how to do this. It seems like a scary thing to do. How do you find a well established place to go in Mexico? Set up an appointment or set up a consultation or how do they check out your mouth beforehand to see what takes place? Do most people there speak English or would I experience a huge language barrier? Also, does anyone know when it’s best to get implants vs. veneers? Thanks in advance.