making stuff

how do I create things

Depends, you could model things in CAD, you could model things in Blender, whichever you choose you will output files to STL/STEP these can be imported to your slicer to make gcode to operate the printer.

what cad website do I use

Printables of Thingiverse for readymade STL files but most things I make I will draw myself on Autodesk Inventor.

It did not work

Hello Hunter604,

What ? did not work ?

Please explain what you are trying to do.

Cheers.