This document lists common errors in orthography, syntax, morphology, verbs, and lexicon that are frequently made in Spanish. In orthography, it provides examples of commonly misspelled words. In syntax, it discusses errors in sentence structure including word order, adjective placement, subjects, negatives, impersonal "haber", purpose, and want. Other syntactic errors mentioned include Saxon genitives, articles, plurals, possessive adjectives, indefinite adjectives, comparative adjectives, object pronouns, subject-verb agreement, irregular verbs, verbal inconsistencies, modal verbs, and verbs followed by prepositions. Errors in morphology around articles, pluralization, possessive adjectives, and indefinite adjectives