Do it in English home. Online resources for high-level English language students. Level: Advanced, CAE, CPE, CEFR levels C1 and C2.
Scope: late teens to adults. Type: resources for self-study or homework. Better English for everyone - Free ESL EFL Resources for Teachers and Students - interactive worksheets, printables, lesson plans, quizzes, exercises, activities, games - ppt, pdf, mp3, video. Antimoon: How to learn English effectively. Skillswise - English.
Sites for learners HIGHER.