What we are building, who it is for, and how it is made.
Sahi padhai means “the right kind of studying” in Hindi. We started the site because most technical subjects are taught as things to memorise: a formula, a definition, a diagram copied into a notebook. Ideas such as attention in a language model, an eigenvector or a Bode plot make far more sense once you can change a number and watch what happens.
So the site is built around experiments. Every lab runs in your browser, is free, and needs no account. The courses and articles explain the ideas in plain words and link to the lab where you can try them.
Students in school, college and engineering programmes; people preparing for exams and interviews; and working engineers moving into AI who want the reasoning behind the tools they already use. We write so that a reader who has finished Class 12 science can follow, and we explain every technical term the first time it appears.
Most of the lessons and articles are written by Pravesh Srivastava, a professional data scientist working in the banking industry, with about five years of experience overall and a master's degree. The writing draws on that work, on courses, on resources from across the web, and on what Pravesh is still learning.
Pravesh's research is listed on ResearchGate and on Google Scholar.
Sahi Padhai is an independent education project, not part of a coaching institute or a university. You can reach us through the contact page.
Lessons and articles are written by the author with the help of AI tools, working from the sources they cite: textbooks, papers, official documentation and public university lectures. Where a course follows the structure of a public lecture series, the course introduction credits it.
Most news is taken from news reports and from the official pages of the companies, agencies and research groups involved, and every story links to its sources.
AI can misread a source or overstate a result, so facts and numbers are checked against their sources. When we find a mistake, or a reader points one out, we fix it. How news in particular is researched, written and corrected is set out in our editorial policy.
Everything on the site is free to use. To cover the cost of running it, we may show advertising, which never decides what we write about. An account is optional: it only saves your progress through courses and simulators.