Hi, Matt S Rinc here and I can help you though need more information.
What exactly do you plan? An application (possibly mobile e.g. Android and/or iPad tablet) that can control a drone? Various drone vendors offer their drone controlling API interface to use in custom software applications. So if you are planning this, then first thing would be to create marketing&technical analysis to choose best model regarding extensability etc.
If you intend to build a drone, then I cannot help you, am not a hardware engineer.
Best Regards,
Matt