The goal of minimization to simplify and decrease the number of ways the software can be exploited. This can include turning off ports that are not needed, reduce the amount of code running, use the concept of least privilege and turn off unneeded features.
Newbie: Remember everything you have learned about the Least Privilege and apply that to your programs. If your programs have the ability to get into important information, there should be a way to regulate how and when it can. What you really want to avoid is someone bad using the program to steal information or break your system. Think of your programs as the puppet in the gif. Don’t let hackers use it to do something bad!