The English for Spanish Speakers editions help Spanish-speaking learners overcome the difficulties they face when learning English. This is achieved by integrating our expert knowledge of Spanish speakers with information taken from the unique Cambridge Learner Corpus. Our in-depth understanding of Spanish-speaking learners is the result of extensive research carried out by our locally-based editorial team, and is clearly evident in our English for Spanish Speakers editions. This guarantees that the topics and activity types are relevant to Spanish-speaking learners of English, with a focus on areas of language which are typically problematic. Extra support is also provided for teachers of Spanish speakers through detailed teaching notes and specifically-designed ideas for the classroom. The Cambridge Learner Corpus is a unique collection of over 30 million words written by students taking Cambridge ESOL exams. It has been developed by Cambridge University Press and Cambridge ESOL, and its unique error coding system highlights the mistakes made by candidates. We use this system to identify which words, grammar patterns or language structures cause the most problems for Spanish-speaking students learning English. As a result, English for Spanish Speakers editions are able to confidently address the common mistakes that Spanish-speaking learners make, and give extra practice and tips to avoid these common errors.