Hi Greg, What Henry as said is as near as you will get it, with out being there to show you.
I myself normaly have to work with a "level" in places where there is no one who knows what its for, so this is what I do. First find a spot on the ground ( high spot) or a mark on a wall we shall call this your "bench mark".it can be anything, as long as it is fixed ( wont move), now, make sure you can see all the area that you what to level ( somtimes theres walls/frames even vans park in the way, ok now make sure its level ( by looking at that little bubble thing on the top turn the little knobs just under and get the bubble inside that little ring, now turn your level 90c and then look again you dont have to keep going around to make sure its level, just the two spots will do. now get a lath 2x1" ( the other person will have to do this) hold the lath upright 3ft above the bench mark, ( you should be about 30ft from it ) now line up your sight and come into focas, the other person will have a sharp pen/fine marker and will slowly move the marker up the lath till it is in line with the little cross hairs that you can see on your level, mark the lath at the cross hairs. Now you will have a nice straight line on your lath. ok, now go to the first point where you want to level and the trick. If you want to put the bench mark is on a wall, then just line up the line on the lath to the cross hairs on your level, done that good, now your helper will mark the wall under the lath, so now you can see how much the ground is lower or higher than the bench mark, you can now work where you like with that bench mark ... Now if you dont have the bench mark on a wall but on the ground ( like we have ) hammer a stake into the ground near the spot where you what to know the level. Now bring the line on the lath up/down to the cross hairs when they are good then mark the bottom of the lath. now you have the level from the bech mark, ...Simple .... John 2000.. PS: This is not normaly how its done, but I do this when I dont have a set point to work from. I set my own. and thats how I do it. :o)