English written self-study course: ten practical office tasks with exercises and worked solutions, a 13-page coursebook, 13-page fillable workbook with 65 fields, offline lessons, local draft-and-review workshop with JSON export/import and four practice files including ten reusable task briefs. Practise emails, meeting notes, document comparisons, procedures, data extraction, formula checks and decision briefings with fictional cases. Requires a computer, approved AI text tool and text editor. No AI subscription, API, video lessons, coaching, automatic sending or guaranteed productivity gains included. Digital ZIP download. 60-day return policy, including US, UK and Ireland. Support: info@einfachhaltbar.de.