Affiliate Marketing Secrets

I am a owner of a site having a little 30000-40000 traffic per month ..
i wish to run amazon affiliate ads on my site !!
Everything is ready but the question is if i add links of a product on my site and someone clicks on it then he clicks another links on amazon site and buy another product will i earn money from this sell?
That is let i advertise an i pod user clicks on my ad and then buy an mobile phone from amazon then will they give me the commission for the sell???
please give me clear idea about this system !!
— and also give me any advise and suggestion about amazon affiliate program —