Pop-up 2d Board Game

I made a 2d board game using an asset that i bought in the asset store, but the game is very simple and pretty boring. I wanted that on specific special tiles, where certain actions happen to the player, a text pop-up appeared, with some dialogue, and then after he gets off of the tile it disappears. I don’t know much about scripting in the c# language.
Does anyone help me with that?

Make a dialog box with Unity’s UI and toggle it on and off with these lines of code:

    gameObject.SetActive(true);	
    gameObject.SetActive(false);      

Add a UI.Text component to the dialog box for the message. To set the text:

GetComponentInChildren<UnityEngine.UI.Text>().text = "hello world";

Unity Tutorials - The New UI

Unity Tutorials - UI Components