Prepare the text you will type. Take the text from a book or magazine. Do not use a text that you are familiar with or you will not have accurate results.
Set the egg timer for one minute. As soon as you set it, you are ready to type.
Type the text until the egg timer sounds. At this time, you will count the words or use "Tools" in Word to find the count.
Proofread the text and count up your mistakes. Take the total amount of words typed and subtract the mistakes for your total word count per minute.