Baliel... a save/load system requires deep understanding in how you'r game works, and what values you want to save. There are some tutorials about making a save/load system here in the hive, you can look for them. Nestharus even created a Map with 50 lessons to teach you how save/load system works, and Bribe is working on a GUI save-load.
In the worst cases, please let us know what you need to save in your map. Let me focus on EVERYTHING You need to save. Exp, Gold, Wood, Item in slot 1, 2, 3, 4, 6, hero, X of hero position, Y of hero position, skills, skill llevels, skill points left, some other variable value, player name, player slot, player color, hero name, hero type, gameplay time...