Find a product around $20 to sell. Earn about 40% of each sale. You earn $8. So make it a goal to sell this product 1 time a week as that will avg to be $1 a day.
To do this, find a product you want to sell by signing up on clickbank, or to a cpa website.
Then create social media accounts with a good name related to the product using twitter, facebook, youtube.
Post 3x daily about your niche. and or 1 video a day
Once followers come up and start liking, subscribing. start adding cpa links to your posts.
Eventually you will get a sale. Then scale this up.
Thats just the social media side.
There is also the method by doing this by email, or using a website, in the end its all the same. The importance is getting traffic and leading them to a way you make money.