Is there a way for me to use the various programs so I can have a feel for how exactly they work and how to use them?
If your school doesn't have the kind of club or community that you're looking for, set a meeting with your guidance counselor about potentially starting one. Your school may have funding available to give you the resources that you want. Plus, starting a club is an excellent leadership activity that any school or company would like to see in an applicant.
There are also free versions of lots of software available for you to use to get your feet under yourself, too. Poke around a bit.