I want to read some very basic books on human psychology free on internet

There are tons of very inexpensive used psychology books on Amazon.

How can our behaviour will be?

Hre are two e-book sites that you can browse through.

Free eBooks by Project Gutenberg

Free Books : Download & Streaming : Ebook and Texts Archive : Internet Archive

onlie psych books - Bing

http://www.scribd.com/doc/19718063/Tit-for-Tat-to-Treat-for-Tat

http://blogs.siliconindia.com/TitForTatToTreatForTat

http://www.change-mgmt.com/2010/04/tit-for-tat-to-treat-for-tat-holistic.html

http://toostep.com/trends/tit-for-tat-to-treat-for-tat---a-holistic-journey-book-on-hu

vinay