  Excellent biscuits. Eat them with a lot of butter and your favorite jelly (I like strawberry), or with gravy, or creamed chipped beef, or whatever.
2 cups of flour a tablespoon baking powder a teaspoon salt a tablespoon sugar about 1/3 cup shortening (maybe slightly more) about a cup of milk (maybe slightly less) In a large bowl, mix together the flour, baking powder, salt, and sugar. A slotted spoon works fine. Stir in the shortening, a little at a time, until the mixture looks like coarse meal.
Don't be anal, but if you find any big lumps of shortening, squish them in better. Gradually stir in milk until the dough pulls away from the side of the bowl. You might not need the whole cup, so try to make an executive decision. At this point, the dough gets pretty hard to stir and you'll briefly wonder whether this shit is really worth it.
It is. Put the dough onto a floured surface (like, the countertop, dude) and work it LIGHTLY a couple of times with your hands so that the lump of dough seems to generally stay together. You need to learn, fucker, that kneading does not a tender biscuit make, so don't overdo it. It won't be completely smooth, but will be floury and sort of unkempt-looking. Get over it. Pat or roll the dough out to approximately 1 inch thick. Two or three rolls with the pin will get you where you want to go.
This isn't rocket science. Cut biscuits out of the dough with a large cutter - at least 2" to 3" (bigger is always better, as you well know) or any large glass/plastic tumbler dipped in flour. Repeat until all dough is used. The more you work the dough, the less fluffy your biscuits will be, so the ones you cut at the end after re-rolling the dough a few times may not rise as high or be as fluffy as the first few.
Do your best. They'll still taste good. Brush off any excess flour and place biscuits onto an ungreased baking sheet. Bake for 13 to 15 minutes in the oven that you preheated to 425 F or until they look golden brown enough for you. This is enough dough for six ex-large biscuits, if you do it right. 
