If you want to earn credits you need to post your trips whether it's with friends family or solo and while posting then you have to give a brief information about from starting to end what happened in that trip which include vehicle, cost, surrounding, and obviously how was the whole trip . write everything and attached few pictures.
2nd you can just post pictures
3rd you can answer the queries
3rd take part in the contest 4th for redeeming the credits there are few trips check them out. have a nice trip😊