This guide draws on English-related errors from around 6000 papers written by non-native authors, 500 abstracts written by PhD students, and over 2000 hours of teaching researchers how to write and present research papers. This new edition has chapters on exploiting AI tools such as ChatGPT, Google Translate, and Reverso, for generating, paraphrasing, translating and correcting texts written in English. It also deals with contemporary issues such as the use of gender pronouns. Due to its focus on the specific errors that repeatedly appear in papers written by non-native authors, this manual is an ideal study guide for use in universities and research institutes. Such errors are related to the usage of articles, countable vs. uncountable nouns, tenses, modal verbs, active vs. passive form, relative clauses, infinitive vs. "-ing" form, the genitive, link words, quantifiers, word order, prepositions, acronyms, abbreviations, numbers and measurements, punctuation, and spelling.