Learning materials need to be interesting, engaging, and mirror the real world to help you save time and communicate more efficiently outside the classroom. I often create my own materials by adapting authentic sources, such as professional blog posts, brochures, company reports, newspapers, articles from 'The Economist', YouTube videos, etc. We will also use tried and tested activities written by professionals to practise those areas of English that often cause problems for Lithuanian learners. I've lived and worked here since 2003, and I am a life-long learner myself, so I have some idea of what you will probably find challenging.