By double clicking the "radiant" application in the cod folder/bin/?

I seem to need to explain this every day lol

I tried to find to find it but I couldn't find anywhere that cle...

The wiki feels fragmented and lacks explanation as to what goes together and why. How do I even get to radiant? I don't understand at all. I think I installed mod tools correctly but still the instructions didn't make too much sense to me. is there anything that sums up the whole process a...