Do i need a paid domain name for affiliate marketing ?

[mani]

Do I need to buy a domain name for affiliate marketing or free domain names from free web hosting provider is enough (I don't want to spend money). What are the possible ways to earn money through affiliate marketing? Is there any other method to earn money from ads other than Google ad sense (As I am from India, I can register only after 6 months). I have skills in writing and social marketing. Can any one help me to establish a affiliate marketing site (preferably need answers from India bloggers or affiliate marketers , as they have good knowledge of my) current situation. But, everyone welcome to give your valuable suggestions.)
Note: I want to ask some doubts.Give you mail ID (If you are okay to be contacted).