Subject: How did reproduction evolve?

How could the first organisms reproduce?  I understand that the evolutionary 
process relies on the transferring of genetic material from parent to offspring. 
I accept the theory of evolution as the most plausible explanation for the 
origin of life on earth and human life, but one point I don't understand:

How could the first organisms have "evolved" the ability to reproduce (even a 
basic common procedure such as binary fission is fairly complicated, isn't it)?

Re: How did reproduction evolve?