4. Taunton's Complete Illustrated Guide To Finishing by Jeff Jewitt. This isn't the only book on the subject, but it's a great place to start. The real strength here is the bounty of color photos, which show exactly what's happening as you finalize your projects. It discusses finishing new projects, but also repairing old finishes and matching vintage pieces. It's not a "start here, end there" walk through, so you'll need to familiarize yourself with the way it's organized before beginning a project, but it is indeed a "complete illustrated guide" with encyclopedic-like thoroughness. Belongs in every library.
I made a low table out of a couple of step-stools, my hollow-core door, and one of the MDF panels that would eventually form part of my top. I was concerned that any oil that dripped on the door might interfere with its glue adhesion, when I finally get around to the project for which I'd purchased it. The top side of the top sheet of MDF, though, I planned to oil, anyway. (Ditto for the bottom side of the bottom sheet.
Grizzly is a company currently undergoing an upheaval. This brand was once known as a manufacturer of professional grade tools and equipment for woodworking products. Though, in recent years, that reputation has begun to slip a bit since being bought by the Chinese company SIEG. These days, whether the Grizzly product stands up to its previous standards of excellence often has more to do with what you are buying than the company itself.