How do I apply for a Thai tourist visa and what are the entry rules?

To apply for a Thai tourist visa, you can use services like VFS Global in Chennai, India. It's important to note that a single-entry tourist visa is valid for 90 days from the date of issuance, allowing you to enter Thailand within that period. Upon entry, you will receive a stamp for 60 days. If you are an Indian passport holder, extensions are limited to a 7-day extension for a fee at immigration, instead of a 30-day extension.