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In Construct classic there are two built-in system actions available for saving and loading.
1) Save/Load to disk
2) Quicksave/Quickload
1) Save/Load to disk
This is used when you want to save/load the current state of the game to/from a file on your hard disk. If you use several file names, you can save several game states and load them later.
Saving to a file:
1. Create an action on the event sheet by selecting System -> ?Save/Load to disk?
2. When creating the action select ?Save? as the ?Operation?. Here you have to also give a file name as a parameter.
Loading from a file:
1. Create an action on the event sheet by selecting ?System? -> ?Save/Load to disk?
2. When creating the action select ?Load? as the ?Operation?. Here you have to also give the name of the file (that you specified while saving the game) as a parameter.
2) Quicksave/Quickload
This is used when you want to save/load the current state of the game. However you can only save one state of the game (compared to the ability to save several game states in several files when using ?Save/Load to disk?).
Quick Saving:
1. Create an action on the event sheet by selecting ?System? -> ?Quicksave/Quickload?
2. When creating the action select ?Quicksave?
Quick Loading:
1. Create an action on the event sheet by selecting ?System? -> ?Quicksave/Quickload?
2. When creating the action select ?Quickload?
Following are some relevant forum topics:
Saving in Games
http://www.scirra.com/forum/saving-in-games_topic39446.html
Save System
http://www.scirra.com/forum/save-system_topic42905.html
Save games and INI files
http://www.scirra.com/forum/save-games-and-ini-files_topic40669.html