There are aspects some aspects that can carry over, like the ability to design a coherent game that works. But that comes from learning to use any game engine/SDK.
But it all depends on:
-Your level of use
If you're borrowing scripts and only know for the most part things that are visual, its likely that the only thing will carry over is familiarity with some of the tools.
-The software you've built up some sort of background in vs the new software
Going from something like GameMaker to something like CryEngine, UDK, Unity doesn't really go well unless:
-You have background in various programming languages
Unity uses Unityscript which is their own bastardization of C# and java
If you are new, like you seemed to have indicate, then I would start with the basic with GameMaker. Get familiar with the drag and drop interface and very basic gameplay programming, then learn how to write your own scripts with their GameMaker Language. Meanwhile, start learning programming languages (java,C,C++,C#,...etc), the concepts from which will be incredibly useful for when you start to learn the first party engine language.
If AI's is what you are really interested in, then cannot stress enough how important it is to learn programming languages, and the logic behind them. AI's are tough, really tough, and there is a lot that is involved in writing the scripts for them. That being said, those concepts behind the writing of good AI's should carry on, but not necessarily the exact methods of doing so, since every game engine/SDK is different.
I know you probably don't want to hear this, and I am in no way trying to discourage you whatsoever. But you have a long road ahead of you. Outside looking in, studying game design sounds like it would be a lot of fun, and sometimes it is, but there is a lot to know, and even more work to be done.
I hope this helps steer you in the right direction.
Source: Video Game Design/Programming Student with experience in Unity,UDK, and GameMaker. Also useful experience: C,C++,Java,OOP Data Structures,Autodesk Maya,ProTools,Reaper,Audition,Photoshop,GIMP... you get the idea.
If your knowledge is very limited, start with something like GameMaker or Project Spark. It will really help you understand basics.