Getting Started

To get started, open a baseplate from ROBLOX, and add a model (by clicking on the plus that appears when you hover over the workspace.)
Now Inside that, add:

An int Value (Set Value to 0, Name to 'Money')
A string Value (Set Value to '_', Name to 'User')
A part (which will be the baseplate for the base, so resize it.)

Now that is done, we can focus on some scripting... almost.
Just add a ClickDetector and a Script to the base's baseplate.
Now we can start scripting.

This will be the code you should add.

local function onClick(player) if script.Parent.User.Value == '_' then script.Parent.User.Value == player.Name script.Parent.ClickDetector:Destroy() end end script.Parent.ClickDetector.MouseClick:Connect(onClick)

To test if this works, walk up to the base, and click it. If the following happens, its working.

The cursor shows a hand when you are close enough to the baseplate.
The hand becomes the default cursor when you click it.
If you click on the User String value, It should have the value maxium77.

What in the world is happening???

Let us have a look at the code a line at a time.

local function onClick(player) This is making a function, using the variable player. Player is the person who clicked the part.
if script.Parent.User.Value == '_' then Remember the string value you made earlier? this is checking if it is still '_'
script.Parent.User.Value == player.Name This is setting the string value to the player's name, as the player is who clicked the part.
script.Parent.ClickDetector:Destroy This is destroying the ClickDetector. What else would it do?
end end These ends mean the end to the function and the if statement started earlier.
script.Parent.ClickDetector.MouseClick:Connect(onClick) This is now letting the computer make the connection that is: "If this part is clicked, do the onClick function."