Hey as The TNPSC VAO examination was held on 14 February 2016 but still here I am giing you its details so that you can prepare for next time

Age limit
Applicants belongs to BC,BCM,MBC category must be in between 21 Years to 40 Years
Applicants belongs to SC/ST must be in between 21 Years to 40 Years
Applicants belongs to Other categories must be in between 21 Years to 30 Year

Qualification required
Candidate should be graduate from recognised university

Selection criteria
On the basis of entrance test
Interview

Here I am giving you tips for doing Preparation for TNPSC Exam
Prepare section wise
Maintain time and speed