It's not too bad once you figure out how the system works. The best way to make money to spend is to get an offer (click the OFFER button) and transport from the cities it describes. Also in certain towns, when you visit the actual town itself, sometimes you can get money for doing a job, it's the option just above leaving the town usually. The first 10/10 is Kuma, the MC, stamina. It goes down through various methods, but usually through interacting with other people and hijinx. The second 10/10 is your gas meter. To refill it all the way, you visit the town and click the 5000 yen option. The last number gauge, which starts at 0, is your affection meter with your current passenger. Once you get all that down, it's just a matter of playing through the game and trying all the options like any other visual novel game.