Well I'd like to get your help, I've already answered your question below.
No, that's easy lol.
I'm not a bad scripter, I'm actually an in training developer, I just need to know more about this.
For example, there will be a GUI where a player can chose to build a house, he'll click on a button, which will attach a house to his Cursor ( with low alpha ) and he'll chose where to place it, more like Map Editor, but during the game.