This document provides 40 tips for writing good grammar and style. The tips cover subjects such as pronoun agreement, verb agreement, avoiding double negatives, proper use of prepositions, participles, infinitives, point of view, passive voice, punctuation including commas, quotation marks, apostrophes and end punctuation. It also recommends avoiding run-on sentences, one word sentences, misspellings, unnecessary words, abbreviations, excessive punctuation, redundancies and negative statements. Overall, the tips promote clear, concise writing.