Hello, Doug, and welcome to Wikitree. Uploading 30,000 relatives sounds like a daunting project, and most people will tell you to start with yourself and gradually work from there. However, I started the other way, by looking for any of my ancestors who were already here. In a few hours, I had found a 3-great-grandfather and several other people back a few generations, so I really needed to add a hundred or so names. Wikitree shows 563 people named McQuinn. Some of them may be yours. You can also search for people who lived in the same town, fought in the same battle, etc. Have fun.