Is there an archive that I can review? I don't want to ask an obvious question.

I downloaded Gramps a few months ago and now I want to upgrade to the latest version to run on my MacBook Pro. Is there no compiled file for the Mac? Do I have to run the Makefile? Apparently I have to uninstall before I can install the new version? Is that correct? It talks about having the files in the correct location, but I am a little lost. For now my new files are in my "Downloads/gramps-3.2.0" directory. Can I just type
make uninstall

To create the application in the Applications folder?? I don't have time to fail, I need to finish some tests before next week. I will just keep using the old version, rather than mess it up.