Tacos and Tortas are the most popular ones.
Taco consist mainly of 3 ingredients:
corn tortilla: tortilla made from corn flour.
pork or beef meat: fried or boiled. Depends on the cut. (sometimes marinated)
salsa: Green or red. Mix of tomatoes, chilis, garlic, onion and coriander.
Tortas consis mainly of 2 ingredients:
Bred: Similar to a baguette
Meat: Pulled pork marineted in orange juice and chili.
Give it a go and you will be the happiest person in the world!