You Can earn Credit by Write Blogs, Posting Vedios and Photos also by refer Tripoto to your Friends. So after earn Credits you can use these credits in your trips booked by tripoto..
It is a hard way. if you are a good writer or an excellent photographer there are chances else it's tough. CHECK with travel agencies who may hire you to be their staff. if you are a good influencer there are better chances or a good salesmen. For international travel I have heard that for 10 referrals there is a ticket free.