The document provides tips for investigating clear title of a property before purchase. It recommends checking the following documents: - Recent 7/12 extract to understand ownership details, loans, tenants, land classification etc. - All mutations on the 7/12 extract to check for any changes in ownership. - Maps to verify the exact location and access to the property. - Checking for any reservations on the property. - Ceiling limits on land holding. - 6c certificate to identify all legal heirs. It also recommends verifying possession, searching sub-registrar records, publishing public notices, and ensuring important points are covered in the title deed.