diff --git a/OpenHMD.cpp b/OpenHMD.cpp
index 5d3260a..a9d4713 100644
--- a/OpenHMD.cpp
+++ b/OpenHMD.cpp
@@ -64,9 +64,11 @@ void OpenHMD::printDeviceInfo() {
 	print("right eye aspect:", 1, OHMD_RIGHT_EYE_ASPECT_RATIO);
 	print("distortion k:",     6, OHMD_DISTORTION_K);
 
-	int bcount[1];
-	ohmd_device_geti(hmd, OHMD_BUTTON_COUNT, bcount);
-	printf("digital button count: %i\n", bcount[0]);
+	// bue 20180422: OHMD_BUTTON_COUNT causes troubles by
+	// compiling with latest openhmd version 0.2.0-3
+	//int bcount[1];
+	//ohmd_device_geti(hmd, OHMD_BUTTON_COUNT, bcount);
+	//printf("digital button count: %i\n", bcount[0]);
  
 	printf("\n");
 }
diff --git a/README.md b/README.md
index e1cc5cd..908497e 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 python-openhmd
-===========
+==============
 
 Python OpenHMD bindings
 
@@ -18,6 +18,99 @@ $ ./setup.py install
 
 * https://aur.archlinux.org/packages/python-rift-git/ (old python-rift version)
 
-## Blog Post
+## Original Blog Post
 
-* http://lubosz.wordpress.com/2013/06/26/oculus-rift-support-in-blender-game-engine/
+* http://lubosz.wordpress.com/2013/06/26/oculus-rift-support-in-blender-game-engine/ (old python-rift version)
+
+
+## Detailed Installation Instruction
+
+### Debian based Linux Distro
+
+Install Blender:
+
+1. `sudo apt-get install blender`
+
+Install OpenHMD:
+
+1. `sudo apt-get install libopenhmd0 libopenhmd-dev`
+
+Install Python3 and Cython3
+
+1. `sudo apt-get install python3`
+1. `pip3 install cython`
+
+Install python-openhmd:
+
+1. `sudo mkdir /usr/local/src`
+1. `cd /usr/local/src`
+1. `sudo git clone https://github.com/lubosz/python-rift.git`
+1. `cd python-rift`
+1. `sudo python3 setup.py build`
+1. `sudo python3 setup.py install`
+
+Enter Blender to Check if Installation 0K:
+
+1. `blender`
+1. choose: Python Console Editor
+1. type: `from openhmd import PyOpenHMD`
+
+
+
+## macOSX with brew installed
+
+Install Blender (inclusive Python3):
+
+1. `brew cask install blender`
+
+Find out the exact installed Blender Python version 
+
+1. `/Applications/Blender.app/Contents/Resources/2.X/python/bin/python3.Xm -V`
+
+Install Python Header Files
+
+1. point your browser at https://www.python.org/downloads/source/
+1. download Gzipped source tarball from the exact same Python version as your Blender Python Version
+1. `cd ~/Downloads/`
+1. `tar -xzf Python-3.X.X.tgz`
+1. `cp Python-3.X.X/Include/* /Applications/Blender.app/Contents/Resources/2.X/python/include/python3.Xm/`
+
+Install Cython3 and 
+
+1. `cd /Applications/Blender.app/Contents/Resources/2.X/python/bin/`
+1. `curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py`
+1. `./python3.Xm get-pip.py`
+1. `./pip3 install cython`
+
+Install OpenHMD:
+
+1. `brew install openhmd`
+1. `cp /usr/local/include/openhmd/openhmd.h /Applications/Blender.app/Contents/Resources/2.X/python/include/python3.Xm/`
+
+Install python-openhmd:
+
+1. `cd /Applications/Blender.app/Contents/Resources/2.X/python/lib/`
+1. `git clone https://github.com/lubosz/python-rift.git`
+1. `cd python-rift`
+1. `../../bin/python3.Xm setup.py build`
+1. `clang++ -bundle -undefined dynamic_lookup -arch x86_64 -arch x86_64 build/temp.macosx-10.X-intel-3.X/pyopenhmd.o build/temp.macosx-10.X-intel-3.X/OpenHMD.o -lopenhmd -o build/lib.macosx-10.X-intel-3.X/openhmd.cpython-3Xm-darwin.so`
+1. `../../bin/python3.Xm setup.py install`
+
+Enter Blender to Check if Installation 0K:
+
+1. `blender`
+1. choose: Python Console Editor
+1. type: `from openhmd import PyOpenHMD`
+
+
+
+## MS Windows
+
+* to be done
+
+
+# Blender and Your OpenHMD Devise
+
+You can download this example blender file to see if now, after installation, your OpenHMD device works with the Blender game engine. 
+
+1. https://docs.google.com/file/d/0B0bLtNyAhxgoZlgycFN4NHRNLTQ/edit