National Council Of Educational Research And Training is recognized as the starting point for preparation. It is also a source of Standard reference material for All Competitive Government exams.

The NCERT library has been created in English and Hindi medium and shall have all contents from Std VI - XII. The library shall be free for everyone and no registration is required.

You can download the entire book with a single click. For IPhone and IPad users the .epub version is available to download.

Full credit of all resources offered here goes to N.C.E.R.T.

Basic Science
Class 6    Class 7    Class 8   Class 9   Class 10
Science - Physics
    Class 11      Class 12      
Science - Chemistry
Class 11      Class 12   
Science - Biology
Class 11      Class 12   
Basic History Class 6    Class 7    Class 8   Class 9   Class 10
Basic Geography
Class 6    Class 7    Class 8   Class 9   Class 10
Basic Social Science
Class 6    Class 7    Class 8  
Basic Political Science Class 9   Class 10
Basic Economics Class 9   Class 10
History Class 11   Class 12
Political Science Class 11        Class12    
Sociology Class 11        Class12    
Economics Class 11-a    Class 11-b    Class12    
Business Studies Class 11   Class 12

विज्ञान - भौतिक
    कक्षा 11      कक्षा 12      
विज्ञान - रसायन
कक्षा 11      कक्षा 12   
विज्ञान - जीवविज्ञान
      कक्षा 12   
इतिहास कक्षा 11   कक्षा 12   कक्षा 12b   कक्षा 12c
राजनीतिक विज्ञान कक्षा 11        कक्षा12    
नागरिक सास्त्र कक्षा 11        कक्षा12    
अर्थशास्त्र कक्षा 11    कक्षा12    
बिजनेस स्टडीज कक्षा 12   कक्षा 12-a

NCERT is regarded as the starting point of preparation for important exams like UPSC, SSC, Banking etc. For CDS and NDA Science and Maths are important and they should be prepared completely from Std VI - XII. For UPSC aspirants the important books are history, geography, science and economics. Both Macro and Micro Economics is found in Std XII books.

For banking students the only important parts are Economics and Management from Std XI and XII.

Licensees may distribute derivative works only under a license identical ("not more restrictive") to the license that governs the original work. This gives the author permission to

    Share — copy and redistribute the material in any medium or format
    Adapt — remix, transform, and build upon the material
    for any purpose, even commercially.

    The licensor cannot revoke these freedoms as long as you follow the license terms.

[Ref: www.nroer.in Website and www.creativecommons.org]