Please refer to the Additional reading material in the below link on how to install AVRA and Avrdude on Windows. (See the third page)
We have given the general instructions for Windows user in the Instruction sheet:
Please read the instruction sheet before proceeding further.
In Windows OS, you have to use the command prompt to execute the avrdude and avra commands.
Hope this helps!!
Since you are using Windows OS, you require to do all the steps which has been mentioned in the ppt. You don't need to execute the commands which we have explained in the tutorial because while recording the tutorial, we used Linux OS. That is why the additional reading material is given for Windows users.