The Department of Phonetics and Linguistics, University College London offers on its website many useful resources and tools for learning English, all of which are freely accessible.
Features:
• KS3 grammar for ages 12-14 with explanations of terms and teaching suggestions
• Materials related to Estuary English, which is the English spoken in and around London, and Word Grammar, a theory of language structure initiated by Richard Hudson
• Tutorials on, among other subjects, phonetics and hearing
• Guides to using the International Phonetics Association (IPA) alphabet of phonetic symbols
• Software for studying and manipulating audio
• Speech Internet Dictionary, which provides definitions of terms used in phonetics, phonology and related sciences
• Categorized and searchable database of English pronunciation tips of the day
• Index of online study skills resources