The Chat Room by Charlie Tonni. Howdy! I'm Charlie. I hold a TESOL Professional Diploma from the University of California, Riverside, and have more than 25 years of experience teaching English as a foreign language to Spanish-speaking students. Additionally, I have more than 15 years of experience teaching in the extension program at the University of Buenos Aires. I provide English instruction using a variety of online materials, such as YouTube videos, podcasts, and webpages, with a major focus on oral communication. Along with general English classes, I offer TOEFL exam preparation courses.