I am trying to lean how to script or powershell
so I am looking for someone to help me know how to make a script about making a countdown for a birthday
by writing the date of birth and the month
Using your favorite search engine, just type your question just like you posted here:
'PowerShell countdown for a birthday'
This list you get back will be more than enough for you to do what you are after.
Also, it would be best for you to take a few free online course on PowerShell, before you go down this road, just so you have a baseline.
There are several no-cost eBooks online ...
...as well as a ton of downloadable scripts for many things.
and long list's of resources...
Windows PowerShell Survival Guide'social.technet.microsoft.com/wiki/contents/articles/183.windows-powershell-survival-guide.aspx'