Readme update

readme.md

@@ -66,7 +66,7 @@ Should run on all Python platforms that have tkinter running on them.  Has been
   
 ### Using
 
-To us in your code, simply import....
+To use in your code, simply import....
  `import PySimpleGUI as SG`
 
 Then use either "high level" API calls or build your own forms.
@@ -753,10 +753,24 @@ Each of the tabs of the form is in fact a form.  The same steps are taken to cre
 
 ## Asynchronous (Non-Blocking) Forms
 
+## Sample Applications
+Use the example programs as a starting basis for your GUI.  Copy, paste, modify and run!  The demo files are:
+`Demo DisplayHash1and256.py` - Demonstrates using High Level API calls to get a filename
+`Demo DupliucateFileFinder.py` - Demonstrates High Level API to get a folder & Easy Progress Meter to show progress of the file scanning
+`Demo Recipes.py` - Three sample forms including an asynchronous form
+`Demo HowDoI.py` - An amazing little application.  Acts as a front-end to HowDoI.  This one program could forever change how you code. It does searches on Stack Overflow and returns the CODE found in the best answer for your query.
+
+## Fun Stuff
+
+## Known Issues
+While not an "issue" this is a *stern warning*
+**Do not attempt** to call `PySimpleGUI` from multiple threads!  It's `tkinter` based and `tkinter`  has issues with multiple threads
+
+**Progress Meters** - the visual graphic portion of the meter may be off.  May return to the native tkinter progress meter solution in the future.  Right now a "custom" progress meter is used.  On the bright side, the statistics shown are extremely accurate and can tell you something about the performance of your code.
 
 ## Contributing
 
-A MikeTheWatchGuy production... entirely responsible for this code
+A MikeTheWatchGuy production... entirely responsible for this code.... unless it causes you trouble in which case I'm not at all responsible.
 
 ## Versioning