Register on it as a worker, select the HITs (jobs) you like, click on "View a HIT in this category", accept it, and start working on it!
But remember, said I said before: You can only order items to Canada (10-20$ shipping), or America (free shipping over $25 items).
Its a khuwari process but a person could earn as much as 100$ in a month easily if he does 3-4 5 minute surveys a day.