How to use?

Sorry, I am a newbie here.
How do I use this? I have been trying the examples but only the ones with default value shows up. Example:
[ifurlparam param=”FirstName” is=”Bob”]Hi, Bob![/ifurlparam]

where/how do I set the param??
so the param is FirstName? where do I look for the firstname param?
Like where is this shortcode gonna check for firstname? do I set up the firstname somewhere?
if not clear here’s another example:
[ifurlparam param=”adam”]Hey, I know you, [urlparam param=”adam”]![/ifurlparam]
do I set the URL to https://www.domain.com/adam for the “hey, I know you, Adam” to appear?