NAM is right, it's the player's responsibility to manage their own game data. Tutorials to save your game are never needed unless 1) You use a unique, inconspicuous way to save or 2) There are other things to do at your save points besides manage game data. The author can only do so much, there comes a point where the player can't have everything spoon fed to them. If, as a player, you fail to find the save points, or fail to manage your game data right, it's your fault. Just like not finding a key or other key object falls on your shoulders, so does not finding your save points. Lack of curiousness or attentiveness for the loss.