Duty cycle min - Correct. It's the lowest speed you want the fan to run
Duty cycle max - Yup, leave it at 100 (full speed)
T min - Sets the lowest temp at which the fan starts.
T range - The operating temperature range of the fan speed. Value is determined by using the formula shown in the tutorial
T operating, T low limit, T high limit are all set as explained:
you will want to disable the dynamic Tmin control and to do this just put in temperatures that your card will never reach for the T operating and the T high limit and put in 0 for the T low limit
Just enter 110 for the T operating and T high limit, and 0 for the T low limit as he did.
The setting that needs the most attention is the T range setting. Do as he explained to find the correct values for your card, you can use the spread sheet from the link to help you.