Hassan SalemNotebook · München

An open notebook, kept since 2021

Software, German, and the parts of life that fit in neither.

Notes from Munich on building software, learning a language properly, and the books that changed how I think. Written down so I stop relearning them.

Telc German B1 Exam Success Kit (20/80 Rule)

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Telc German B1 Exam Success Kit (20/80 Rule)

Name your price · from €9.78 · Gumroad

4 Nov2026

4 Nov 26

How to Use Copilot Accounting Skills in Excel

Copilot accounting skills in Excel handle reconciliations, journal entries and variance analysis with an audit trail. Useful for in-house accountants and small-firm bookkeepers.

27 Oct2026

27 Oct 26

How to Use Gemini Notebook in Gemini Chat

You can now use Gemini Notebook in Gemini chat with @Gemini Notebook to create notebooks, save chats as sources and ask questions. Useful for thesis students and software engineers.

25 Oct2026

25 Oct 26

How to Use ChatGPT Slides to Build Client Decks

ChatGPT Slides turns your notes and files into an editable deck you can export to PowerPoint. Useful for freelance consultants and sales account managers on paid plans.

21 Oct2026

21 Oct 26

How to Lock Chats in ChatGPT With a PIN

You can now lock chats in ChatGPT behind a PIN or Face ID. Useful for freelancers who share their screen and recruiters who work with private candidate notes.

17 Oct2026

17 Oct 26

The AI Buffet Now Comes With a Bill

AI at work was never free. Someone else was just paying. Know what your work costs, and you become the person trusted with a bigger budget.

16 Oct2026

16 Oct 26

How to Get Your SCHUFA Report for Free

You do not have to pay 29.95 euros to see your SCHUFA data. Request the free Datenkopie online, or check your score for free in a SCHUFA account.

16 Oct2026

16 Oct 26

The Config Property That Did Not Exist

The agent added a retry setting that looked perfect. Spring Boot ignored it silently. Now I never ask an agent if it is sure. I ask where it found it.

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