By posting more content but be mindful of quality and originality. u can also try your luck by participating in monthly contests. u can stand a chance to win a whopping 500 credits. check out the same on contest page. alternatively u can reply to queries on this forum page. these are the two ways to earn credits.
Try participating and publishing photoblog/ trip as per Monthly Contest. post your photoblog on tripoto based on the contest that are being posted on Instagram account ( eg - #LastNormlaPhoto which is ongoing ) answer the queries of fellow travelers in forum.
But it is pointless to collect these credit points according to me.Any discount less than 40% is not worthy because premium price of trip will be 30-40% more.And you will not get more than 10% through your credit.
Better to concentrate on good content and photo such that everyone can findout good places unknown to them and visible through blogger lens and keypad.
It is my personal view.
Sorry,if i am wrong.
If anyone has better knowledge then pls correct me.