For serious aspirants, investing in the physical copy or a legal e-book is the recommended path. The marginal cost is outweighed by the reliability of the information—something that is crucial when preparing for competitive examinations.
[PDF] Subhash Kashyap’s ‘Our Constitution’ – A Must-Read for UPSC & Law Students (Download Guide) subhash kashyap our constitution pdf free download
For the actual text of the Constitution (rather than Kashyap's commentary), you can download the latest official PDF for free from the Legislative Department India.gov.in Purchasing: For serious aspirants, investing in the physical copy