Put it bout 1/4 in deep. Seeds will grow no matter which way u put em in, just sum ways r quicker. I put mine in with the end the tap root pops out of (which is the end opposite of the end wit the lil hollow bump thingy) facing upwards. The tap root grows out and then wraps around facing downwards and continues to grow, forcing the lil sprout out the ground. But ive put em in opposite of that way and they sprouted as well. Keep in mind, mother nature aint got no tweezers to place a seed perfectly in the ground hehe.
And i would go ahead and cover the entire thing. Dont pack it down tho. And make sure you have a spray bottle for ur water. Just keep em slightly moist....NOT WET AND MUDDY......just moist. Spraying the soil helps keep the seed in its original place, vs pouring water on it and watching the soil swell up and then go back down as the water drains down *hint hint* thats quite a bit of movement in the ground.