Text book

1. Vittal R.Srinivas, "Bioinformatics -A Modern Approach", 2005, ISBN : 978-81-203-2858-7, published by PHI Learning Private Limited, New Delhi.

2. Andreas D.Baxevanis, B.F. Francis Ouellette, "Bioinformatics - A Practical Guide to the Analysis of Genes and Proteins", Third edition, 2005 2006, ISBN : 978-81-265-2192-0, published by John Wiley & Sons INC. , U.K.

Webliography

1. NCBI Help Manual: http://www.ncbi.nlm.nih.gov/books/NBK3831/
2. NCBI Gene Help Manual: http://www.ncbi.nlm.nih.gov/books/NBK3839/
3. NCBI Frequently Asked Questions: http://www.ncbi.nlm.nih.gov/books/NBK3840/
4. NCBI Website: http://www.nlm.nih.gov/
5. http://www.biotools.info/links/A1bioinfo.pdf

Videos: 

1. How to use NCBI Databsae: www.youtube.com/watch