I was taught to perform a short field take off when taking off from grass, which nobody seems to have mentioned
I think you mean a "soft field takeoff"?
A short field takeoff leaves the nosewheel down all the way until Vr and then you climb aggressively at Vx. This is best done on hard runways, but can be done on good grass too. This one is easy.
A soft field takeoff is where you pull the nosewheel up very early in the takeoff run - maybe at 30/40kt in a 60kt-stall-speed plane - and the whole plane floats in ground effect until Vr, then climb away as normal. You don't want too much crosswind when doing this one
This one needs practice because after the initial aggressive pull-up to get the whole thing into ground effect, you have to increasingly push forward on the yoke, to prevent the plane floating up too high and out of the GE (which will stall it and it will plunge back down).