Old English, spoken from the 5th to 11th centuries, is the earliest recorded form of English. It had a unique alphabet, pronunciation rules, and spelling system that differed significantly from Modern English. Understanding these elements is crucial for studying Old English literature and language history. Old English orthography included special characters like æ, ð, and þ. The language had seven vowel sounds, each with short and long versions, and several diphthongs. Consonants were similar to Modern English, but with some differences in pronunciation and representation.