I would recommend Visual Studio if you were to build a tool.

1NE wrote

So I have just started to learn Python in school as I am in year 10 (it is one of my options for GCSE) -UK

Anyway, I am very new at coding in general and so far have learned a basic knowledge of the language and I can code simple things like quizes etc..

I really want to be able to build my own TTG tool such as: _Skittle's

If you could help me out it would be greatly appreciated, thanks

It all depends. If you want to strictly build in with python, you'll have to use Tkinter for the GUI and urllib2 or httplib for the web requests to receive the data to parse for each of the user fields.

I personally have never built a GUI tool in python, but you can also dig into C# and use SharpDevelop/Visual Studio as they both have drag and drop interfaces for a GUI. If you only use Python in your current class, stick to that and try not to branch off as Python and C#'s syntaxes are substantially different and you may lose track in your class.