Summarize the following:
You'll get the best flavor of coffee by grinding whole beans just before brewing. Measure out 30 g of whole beans and place them in your grinder. Grind the beans until they're medium-fine which is about the size of coarse sugar. Burr grinders will give you more control over the grind and will make more uniform grounds than blade grinders will. Measure 3 tablespoons (about 30 g) of coffee grounds into the moistened filter. Shake the brewer a little so the coffee grounds are at an even level. Level grounds will make the coffee extract evenly. Then place the carafe with the brewer on a digital scale and set it to zero. You'll need to keep track of how much water you're pouring over the grounds, so the scale comes in handy.

Summary:
Grind the coffee, if you're using whole beans. Put the coffee in the filter and set the pour over on a digital scale.