As a former naval flight officer (I flew A-6s before the Navy retired them), the topo, or topographic chart, is one of my favorite things on this planet.
The topo is a model, a representation of the terrain of a given area. It is a flat piece of paper that represents often very-not-flat land. The most important symbols on the chart are the contour lines: lines that represent lines of equal elevation on the ground. These lines run across (not up and down) slopes, so that when you see lines close together, the land represented is steep; when the lines are farther apart, the land is closer to flat. It would be easier to explain in person.
If you don't already have one, get a topo of your lease from topozone.com (type in the nearest town, then adjust from there). Get an aerial photo of your lease from mapquest.com, and compare the photo to the topo (they'll probably be diferent scales, so adjust for that, too). You may be able to see the hills on the photo, and understand what the topo is telling you based on that. Either that, or take the topo, go to your lease, figure out where you are on the topo (based on a road intersection, powerline, stream, or similar landmark) and start walking around (a compass will help), correlating the land with what you see on the topo.
If topozone.com doesn't work for you, or you want a higher-quality chart than what your printer will produce, the U.S. Geologic Survey sells topos for around $5 each. You can order them from the USGS if you know the name of the "quad" where your lease is. A better bet would be to look in the yellow pages for a surveyor, survey supply company, or engineering supply store in your lease's area; they often carry topos, or know who does.
You may want to look for a good book on map and compass reading. I learned map and compass/orienteering in the Boy Scouts long before I flew off carriers.
As far as where deer will be based on terrain, just about any book on deer hunting has its thoughts on that. Where I live, in Maryland, the way to find deer with a map is this:
(1) Tack a map of Maryalnd to the wall,
(2) Throw a dart at it; try to hit dry land.
(3) Wherever the dart hits, deer are there.
Good luck.