The passport applicant can download the eform and fill it offline and make presence to the psk. Complete the application form filling in respect to the original documents you own and attach scanned photocopy of original documents and then submit. First access website http://passport.gov.in/
There are zonal registration offices of INDIAN PASSPORT ONLINE in the state of Tamil Nadu. For example to buy passport over online the registeration falls in the respective zonal office like Madurai, trichy or chennai. Enclose the enclosures in respect to the category of passport you choosed like ordinary or tatkal. Know your date to attend the interview with original documents
Once the candidate register the file application he / she is provided with the date, time and centre for submission and document checking at the closest passport office. You should Create an user id & a password. THere is an instruction manual that is to be read by the applicants filling passport form online or offline and make submission of online registration and take print out from the official webpage of passport office India.