Hi! you can increase your credits by posting questions, writing a blog, posting pictures and videos from your traveled places and many ways. You can use your credits for booking trips or packages through Triipoto based on the limitations.
By writing travel blogs, posting travel pictures and travel videos, based on the originality of your posted content tripoto offers you the required credits. The credits you earn can be used for booking travel packages. There are lot of online workshops which you can use to attend.