ESL, or English as a Second Language, is an academic curriculum that focuses on developing English speaking and comprehension skills in students who do not speak it natively. Spelling, reading, writing, and vocabulary are common focus areas.

Mexico, officially the United Mexican States, is a federal constitutional republic in North America. Working may require a work visa, which is difficult to get if you want to freelance for a short time. Most of the government-funded universities in major cities (state capital) have short courses on history, gastronomy, and cultural subjects, and most of them are almost free.