How do i create a website OR blog to earn referrals?????

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uhhh....i wanted ta know as to how to create a website. I've been browsing through the articles on mylot regarding earning money online and i see that majority of the members have there own blog or website. I wanna know what's the difference between the two. Which is better for getting referrals???? How do i go about creating a blog or website???? Which sites are best free providers for these services?????.....and what are your personal preferences?????