Inventory Help

I've been silently searching for several weeks now in an effort to learn how to accomplish what I'm trying to do with an Inventory system on my own, but I've decided to try and ask for some guidance. I've done thorough searches using Google and the native searching capabilities of the site, but I haven't quite found a script that accomplishes what I have in mind. I've noticed that detail is key when asking for help around here, so I'll try to be as specific as possible.. starting with a description of my game project:

"The game is predominantly action-based, using tool items to both explore areas around the village and to tend crops on soil plots. The player must build relations with the villagers in order to glean information concerning a mystery, and does this via conversation, gifts, and events. There are RPG elements, but the genre would be better classed as a casual/action game in a fantasy setting."

I've learned quite a bit about the value of prefabs from looking into some available inventory scripts to see how the item database is managed, so I have put together a script with the following vars to set via the inspector for each item:

 class Item {
 
 var name : String;
 var icon : Texture; // 50x50 icon texture that represents the item
 var type : String; // Set whether the item is a tool, ingredient, dish, etc.
 var mesh : Transform;
 var consumable : Boolean;
 var giftable : Boolean; // Flags if the item is able to be given to an NPC
 var sellValue : int;
 var buyValue : int;
 var regenValue : float; // If consumable, sets the percentage of recovery
 var index : int; // Means of grouping like items via numbers
 var description : Texture; // 2d Texture used to supply layer with item information
 
 }

I'm aiming for a predominantly mouse-based control system in the game overall, but the inventory is my primary concern. The gist of the controls are summarized here:

 // Slots should be arranged in a 6x4 grid amounting to a total of 24 slots; 6 columns, 4 rows.
 // The Inventory can be opened or closed by clicking on an HUD icon or by pressing the I key.
 // Items within the Inventory can be reorganized by dragging and dropping.
 // Items are used and tools are equipped by double-clicking.
 // Delete items from the inventory by dragging and dropping the item to a delete icon.
 // Items can be selected and information viewed by clicking once on the item.
 // Items CANNOT be dragged and dropped outside of the inventory, only reorganized within the pane.

Looking into Unity's documentation and the API, I managed to create a series of three GUI Texture buttons as a temporary means of triggering the game menu scripts, but that is as far as I was able to get without now seeking some help. I've grabbed a few books on C#, but for the time being I feel most comfortable with Unityscript's syntax.

This is, so far, the largest hurdle in my learning experience so far with Unity, and I'm very much impressed with the available documentation! I come from an artistic background, but have always enjoyed designing frameworks for my ideas and dabbling in Ruby when my game project was still based in the RPG Maker XP engine.