Hi!
Start by reading the "New Shoppers" area on the forum. It will really open your eyes to what this is all about.... Then sign up for companies. There is a huge list linked below and all the companies have been vetted, so you don't have to worry about getting scammed as long as you use the provided links.
Other than that, follow the forum... Great information gets shared daily.
Hard work builds character and homework is good for your soul.