Mario Herrera is the author and co-author of many acclaimed ESL/EFL series that are used in levels ranging from pre-primary to junior high schools. As an international consultant and teacher trainer, Mr. Herrera travels the globe, directing seminars and delivering professional development workshops throughout the Americas, Europe, the Middle East, and Asia…and we have had the enomous privilege to talk with him after his BIG conference in Madrid.

Thank you Mario, it was a pleasure to learn from such an experienced traveller, you gave us one of the biggest learning journeys!

We hope that you like it as much as we did!