please view the wiki it is all right there mate that is why it's called thewiki
The thread has been moved to the help section. To start coding please refer to the wiki Coding Tutorial and the various available wiki articles:
https://powdertoy.co.uk/Wiki/W/Coding-tutorial.html
Source code to TPT:
https://github.com/simtr/The-Powder-Toy
Compiling tutorial:
https://powdertoy.co.uk/Wiki/W/Compiling_tpt%2B%2B_with_Visual_studio.html
There's a fairly good amount of tutorials online. Searching it on Google shows some decent ones immediately. Try which ever ones and see what sticks.