After downloading a version of the calendar from the website
you will find the document in your download folder (unless you choose to have it open directly into Word).
Double click the Happy Month calendar you downloaded (above you see Happy September) file to open it up in Word.
The file will open and you will receive a dialog asking which month you wish to work on. Since you are wanting to personalize it, you will need to click the Enable Editing button at the top of the page.
Once you click the Enable Editing button, you will see a dialog appear
Once you select the month and year, click OK to begin making any additional edits or just simply be able to print out this version for the month.
Happy Today and enjoy your Happy Month calendar.