Sanding and sandpaper for absolute beginning woodworkers

I want to thank Shy Lev-Ari, a viewer from Israel, for suggesting this video. A lot of us take sanding wood for granted, yet it is the most basic skill we need to know about woodworking. Ive often quipped that woodworking is 10% design, 10% construction, and 80% sanding.

But with all the grades of sandpaper available,  its something that can easily confuse the beginning woodworker. In this video, I have tried to boil sandpaper down to its basics.
Essentially, woodworkers need to know that you can do almost anything with only three grades of sandpaper: 80, 120, and 220. 80 is the coarsest grit and is used for leveling out rough wood caused mostly by machine marks from saws.
From there, move up to a 120 grit sandpaper to smooth out the marks left by the coarse 80 grit paper. Finish off your wood with a 220 grit (fine) sandpaper.
You can learn a lot more about sanding and get more detailed, but for most of us, we really dont need to bother sanding past 220 grit. Let your finish provide the smooth feel of your project.