This document provides an overview of prepositions in English, including what they are, common types and uses, and some tips for learning and using them correctly. It defines prepositions as words that indicate a place, time or object in relation to the other parts of the sentence. It discusses prepositions of time, place, movement and dependent prepositions that follow certain verbs and adjectives. It also covers phrasal verbs, common errors involving prepositions, and differences between English and Italian preposition usage.