Optimise is a new, four-level, series of modern textbooks for teenagers, which will be perfect for language schools and private schools, mainly during courses preparing students for exams. The manual has a structured structure that makes it easier for teachers to conduct lessons, and the topics of the chapters are close to the interest of young people. The series provides students with a solid preparation for exams, with particular emphasis on exam productive skills, which are usually the most challenging for them. The Talk2Me videos and the Speaking Test help build the confidence needed to communicate fluently and prepare them for the speaking test, while the step-by-step approach to writing helps them develop this skill on a regular basis. Optimise is also a wealth of digital components that make working with the textbook more attractive and engage students, making it easier for them to assimilate new language material. The new edition (Optimise update edition) of the A2 and B1 levels is adapted to changes in the Cambridge Key for Schools and Preliminary for Schools exams, which enter into force in 2020. The updated version includes new task types and word lists.