TNPSC Materials Free Download

From which website I can do free download the exam materials of Tamil Nadu Public Service Commission recruitment exam so please tell me about this because I have need of its exam preparation materials?

[Saksham]

TNPSC study material of CENSUS of INDIA 2011 Provisional Details is given below:

Census 2011 was held in two phases:
1) House listing & Housing Census (April to September 2010)
2) Population Enumeration (9th to 28th February 2011)

What is provisional census?
Provisional Population is arrived at by adding the Population as reported
By each Enumerator for the Enumeration Block assigned to her/him
The final population will be arrived at by scanning of Schedules, data
Processing and other checks
The Final Population is likely to be released next year
Some facts about census:
Density: Top 2 Districts in India
North East (NCT of Delhi) - 37,346
Chennai (Tamil Nadu) - 23,903

For detailed study material I am uploading a PDF file to you. You can get it from here after downloading.