1.) Sign up to a forum related to your niche or website. So if i had a website about making money, i would sign up to Warrior Forum or DP. 2.) Second make a thread something like this "Hy guys i am giving away an ebook for newbies in internet marketing, it will teach you all the basics of seo, keyword research, content writing, etc. To receive this fantastic ebook, Go to this site: www.yoursite.com/signup/ And enter your email address. BUT HURRY GUYS THIS A LIMITED-TIME OFFER" 3.) Watch your list grow. Tip: only post on active forums, dead forums are no use. 4.) promote clickbank products and cpa offers to your list. This can be done in any niche you want, just be creative.