# ErataWay > ErataWay is an English-learning web application for focused grammar, vocabulary, listening and reading practice, with progress reports to guide subsequent study. Official website: https://erataway.com/ . The public introduction is in English. This guide covers only the public landing page, not authenticated course material or personal learning records. ## Public introduction - [ErataWay](https://erataway.com/): Published overview of grammar guides and exercises, vocabulary practice and Favorites, listening and reading resources, and topic/level progress reports. - [Practice areas](https://erataway.com/#practice): The learning skills described on the public page. - [How it works](https://erataway.com/#method): Choose a topic and level, practise actively, then review the results to decide what to study next. ## Content formats The public introduction supports `Accept: text/markdown` at the same canonical URL. An alternate Markdown link and this guide are advertised in HTML and response Link headers. Markdown is generated from the current public landing-page source, not a separately maintained copy or an authenticated application response. ## Access boundaries Course, sign-in and registration links lead to a separate application. `/course`, `/course/login`, `/course/login/signup`, `/admin/` and `/api/` are not public content exports. This guide does not provide lessons, private APIs, reports, credentials, student information or account access. Normal authentication and authorization remain required. Do not infer subscription pricing, accreditation, examination partnerships, availability of every level, or guaranteed learning outcomes from this introduction. ## Optional - [XML sitemap](https://erataway.com/sitemap.xml): Public canonical-page discovery. - [Robots directives](https://erataway.com/robots.txt): Existing administrative and API restrictions, with the private course application excluded from crawling.