About
Hands-on notes on working with tasks and data.
What does this site cover?
These free tutorials are for coding beginners, office staff, students, researchers, and practitioners. They cover scripts, Excel and documents, AI, automotive data, research, and team collaboration.
Each article explains what you need, the steps to run, examples, result checks, common errors, and limitations. You can download the example files from each article.
Read for free and check for yourself
There are no sign-ups, comments, payments, newsletter subscriptions, or live AI chat features. If a hosting login screen appears first, you are viewing a private deployment for the owner.
The revenue model is advertising. Ads and visitor analytics tools are not currently connected, and the site does not call external AI APIs.
About the materials
The text, code, and example data were created for this site. Automotive, test, and analysis materials use synthetic data for illustration. They are not results from actual companies or research institutions.
Content in each language is managed against the Korean original. Completed translations are added to the language menu.