Marlin compile issues

If you have a link to that video ( just so I know that I’m looking at the correct video), that would be great, I’m just so afraid to brick this board; it cost $80 and took forever to get the darn thing. I tried the auto-build marlin, but I made a mistake in the begging, and after the initial board died, I thought I’d be clever and install a bunch of add ons like a direct drive and a HeroMe, and now all the stock settings no longer apply, so I’m not sure if the auto-build will work.