If you want to become an English teacher as fast as possible the best way is to get a TEFL certificate. During 4 weeks there will be input sessions in the morning and teaching practices in the afternoon. The program takes 4 weeks in which you will obtain all the necessary skills to teach English. There are three options:
1) TEFL: Teach English as a foreign language, TESL: Teaching English as a Second Language or TESOL: Teaching English to Speakers of Other Languages. You can do these courses in Mexico and the US. After having completed the program successfully the ITTO organisation guarantees paid job placement in Mexico and job contacts all over the world.

The program is not only aimed at future teachers. You can do it as an internship, take it as a second career possibility or finance global travels with it. In any case it will give you the opportunity to make new friends from all over the world, experience an unforgettable time while following your career.