READ:

 

https://powdertoy.co.uk/Wiki/W/Compiling_tpt%2B%2B_with_Visual_studio.html

read:

https://powdertoy.co.uk/Wiki/W/Compiling_for_Windows_with_scons.html

This one is easier to use, and to setup but you need a lot of programs

https://powdertoy.co.uk/Wiki/W/Main_Page.html#How_to_Build

go look in the "How-to build" wiki 

@mniip (View Post)
You can easily assume EVERYONE uses windows in situations like this, just answer people's questions.

@Redtiger46
Do you know c/c++? If you want to learn them you can but it will be hard to set up, and you will have to learn c++.
A much easier method is learning lua. This is a simple script you can run in the console that you can also add elements with, and you don't have to modify the exe and distributed a new one. Once you know a bit of luau read about the legacy lua API in the wiki (and the other ones later)

@Redtiger46 (View Post)
To make a proper mod, you need basic C++ knowledge. Then you need to choose whether you are going to use VC++ or SCons. Then follow their respective guides on the wiki to set them up. Then PM me or some other coder if you want to know about creating, coding and editing elements.