About the site and its tools

Frequently asked questions

Find out what TeachyLeaf currently offers, how its browser tools work, and how to report a problem.

TeachyLeaf

Common questions

What can I learn on TeachyLeaf?

The current library includes practical SQL and JSON tutorials, plus browser-based SQL, JSON, and URL component tools. New lessons are added when they are ready to be useful and checked.

Browse published tutorials

Are paid courses available?

No. TeachyLeaf does not currently offer paid courses, enrollment, refunds, certificates, or a member community. The Courses page points to the free learning resources currently available.

View learning resources

Are my inputs uploaded when I use a tool?

The SQL formatter, JSON formatter, and URL component tool process input in your browser. Their pages explain each tool’s specific limits. Do not send sensitive input to us by email unless it is necessary to explain an issue.

Review tools and their limits

How can I report an error or suggest a topic?

Use the contact page to report a broken link, incorrect example, tool issue, or lesson idea. Include the relevant page and steps to reproduce the problem when possible.

Contact TeachyLeaf

Who creates the content?

TeachyLeaf is run by Amit Kumar Das. The About page describes his teaching and software-development background, and the editorial approach explains how examples are prepared and corrected.

Meet the author