diff --git a/README.md b/README.md
index 217bf17..0770ccf 100644
--- a/README.md
+++ b/README.md
@@ -1,59 +1,109 @@
-This is a mod that adjust propellent utilization on engines, as was done in 
-real life on the J-2 rocket engine.  
+What does this mod do?
+----------------------------------
+This is a mod that adjust propellent utilization on engines, as was done in real life on the 
+J-2 rocket engine. EMR stands for Engine Mixture Ratio
 
+## How do I use it
+ERMController works in two modes: "open", and "closed" loop modes.  Open loop takes the
+Oxidizer:Fuel mixture ratio you want to use, and runs the engine at that mixture.  Closed loop
+takes a look at your remaining fuel, and continually adjusts your mixture ratio to exhaust
+both fuel and oxidizer at the same time.
+
+We'll cover how to
+
+ 1. Set up an EMRController configured engine in the VAB, and
+ 2. Use that engine in flight
+
+### VAB
+In the VAB, the first step is to click the `Enable EMR` button.  By doing so, you'll get a wide range 
+of options to configure:
+![EMR VAB](https://cdn.pbrd.co/images/aLvhhUTyE.png)
+
+`Starting EMR`: This is the mixture ratio the engine will (by default) start at
+
+`Final EMR`: this is the mixture ratio the engines will (ideally) end at
+
+> Note: Both Starting and Final EMR have vacuum ISP and Thrust displays visible
+
+`Percentage at Final EMR`: This is the percentage of fuel you plan to use at your Final EMR
+(This is used to determine how much fuel we should put in our tanks)
+
+`Boiloff Reserve Percentage`: If you're using a mod that simulates propellent boiloff, 
+this slider allows us to add up to 50% more fuel or oxidizer, whichever you want to have more of.
+Drag right for fuel (the more common choice), or right for oxidizer.
+
+Now when you add your fuel (assuming you're using RealFuels), the fuel tank should properly select the
+right mixture for you.
+
+### In Flight
+![EMR In Flight](https://cdn.pbrd.co/images/aM2yq3O7x.png)
+
+When operating in Open Loop, the following options are available:
+
+`Current EMR`: The currently active EMR (again, with Vac ISP and Thrust values below)
+`Reserve`: Assuming you stayed at the current EMR, you would be left with this much fuel/oxidizer
+`Change to Closed Loop (X.X:1)`: clicking this will switch you to Closed Loop mode,
+which would change your EMR to X.X:1
+
+Clicking on that, the UI changes.  The slider for `Current EMR` gets replaced by text that updates, 
+and generally, `Reserve` will show "None".  An exception to this is when Closed Loop mode is 
+operating at the configured EMR limits
+
+## Configuration 
 Each configuration for an EMRController module takes 2 MIXTURE configs
 (an upper and lower limit.)  There are some key parameters on a MIXTURE 
 config as follows:
 
-  configName: if using ModuleEngineConfigs, you can specify the config this
-              MIXTURE should be applied to
+    configName: if using ModuleEngineConfigs, you can specify the config this
+                MIXTURE should be applied to
 
-  ratio:      the oxidizer:fuel ratio that this mixture uses.  
-              Note: this is by mass (and not volume, as is what KSP normally uses)
+    ratio:      the oxidizer:fuel ratio that this mixture uses.  
+                Note: this is by mass (and not volume, as is what KSP normally uses)
 
-  maxThrust:  The maximum thrust this engine produces at this ratio
+    maxThrust:  The maximum thrust this engine produces at this ratio
 
-  minThrust:  The minimum thrust this engine produces at this ratio
-              This is optional, and defaults to 0
+    minThrust:  The minimum thrust this engine produces at this ratio
+                This is optional, and defaults to 0
 
-  atmosphericCurve:  a standard FloatCurve for the ISP at this MIXTURE
+    atmosphericCurve:  a standard FloatCurve for the ISP at this MIXTURE
 
 A sample MM config:
 
-	@PART[liquidEngine2]:FOR[EMRController]
-	{
-		MODULE
-		{
-			name = EMRController
-
-			MIXTURE
-			{
-				configName = something
-				ratio = 1
-				maxThrust = 200
-				minThrust = 0
-
-				atmosphereCurve
-				{
-					key = 0 325
-					key = 1 260
-					key = 6 0.001
-				}
-			}
-			MIXTURE
-			{
-				configName = something
-				ratio = 1.5
-				maxThrust = 300
-				minThrust = 0
-
-				atmosphereCurve
-				{
-					key = 0 300
-					key = 1 200
-					key = 6 0.001
-				}
-			}
-		}
-	}
+    @PART[liquidEngine2]:FOR[EMRController]
+    {
+        MODULE
+        {
+            name = EMRController
+
+            MIXTURE
+            {
+                configName = something
+                ratio = 1
+                maxThrust = 200
+                minThrust = 0
+
+                atmosphereCurve
+                {
+                    key = 0 325
+                    key = 1 260
+                    key = 6 0.001
+                }
+            }
+            MIXTURE
+            {
+                configName = something
+                ratio = 1.5
+                maxThrust = 300
+                minThrust = 0
+
+                atmosphereCurve
+                {
+                    key = 0 300
+                    key = 1 200
+                    key = 6 0.001
+                }
+            }
+        }
+    }
+
 
diff --git a/Source/EMRController/EMRController/EMRController.cs b/Source/EMRController/EMRController/EMRController.cs
index c1363b4..c392eea 100644
--- a/Source/EMRController/EMRController/EMRController.cs
+++ b/Source/EMRController/EMRController/EMRController.cs
@@ -82,7 +82,7 @@ public void ChangeEMRModeAction(KSPActionParam param)
 			UI_FloatEdit(incrementSmall = 0.1f, incrementLarge = 1.0f, incrementSlide = 0.01f, sigFigs = 2, unit = ":1", scene = UI_Scene.Flight)]
 		public float currentEMR;
 
-		[KSPField(isPersistant = false, guiActive = true, guiActiveEditor = false, guiName = "EMR Ratio")]
+		[KSPField(isPersistant = false, guiActive = true, guiActiveEditor = false, guiName = "EMR")]
 		public string closedLoopEMRText;
 
 		[KSPField(isPersistant = false, guiActive = true, guiActiveEditor = false, guiName = "ISP")]