This website aims to provide a wide range of authentic materials for those wanting to learn English and for English language teachers. For the most part the focus is on English for Academic purposes. ESL (English as a second language), ESOL (English for speakers of other languages), and EFL (English as a foreign language) all refer to the use or study of English by speakers with a different native language. The precise usage, including the different use of the terms ESL and ESOL in different countries, is described below. These terms are most commonly used in relation to teaching and learning English, but they may also be used in relation to demographic information. ELT (English language teaching) is a widely used teacher-centred term, as in the English language teaching divisions of large publishing houses, ELT training, etc. The abbreviations TESL (teaching English as a second language), TESOL (teaching English to speakers of other languages) and TEFL (teaching English as a foreign language) are also used.