diff --git a/CHANGELOG.md b/CHANGELOG.md
index 101bcbe..9214fad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Continuous Integration
 
-## [0.0.1] - 2019-10-24
+## [0.1.0] - 2019-10-24
 
 ### Added
 
diff --git a/README.md b/README.md
index 086aedc..6124b42 100644
--- a/README.md
+++ b/README.md
@@ -1,24 +1,47 @@
 # vKVM Library
 
-# Installation
+This library allows for easy interaction with the graphical user interface of the vKVM project.
+
+
+## Features
+
+- set pixel color
+- respond to keyboard/mouse events
+- get/set text to be drawn
+
+## Installation
 
 Use the installation script provided in the Scripts repository
 to install the full package.
 
 Installing a single component is currently not supported.
 
-# Usage
+## Include
 
 Include this library with
 
 ```
-set(LIB_PATH "${CMAKE_SOURCE_DIR}/../library")
+set(LIB_PATH "${CMAKE_SOURCE_DIR}/../relative_path_to_library_folder")
 
 include_directories(${LIB_PATH}/include)
 add_executable(your_client ${SOURCES} ${HEADERS})
 
 target_link_libraries(your_client ${LIB_PATH}/lib/liblibrary.a)
 ```
-in your CMakeLists.
+in your CMakeList.
 
-More documentation coming soon.
+## Usage
+
+```cpp
+#include <vkvm.h>
+
+int main(int argc, char* argv[]) {
+    if(argc != 1) return -1;
+    int pid = std::stoi(argv[0]);
+    initialize(pid);
+
+    setPixel(10, 10, Color::black);
+    setPixel(10, 20, Color::red);
+}
+
+```
\ No newline at end of file
diff --git a/src/Color.cpp b/src/Color.cpp
new file mode 100644
index 0000000..3daac50
--- /dev/null
+++ b/src/Color.cpp
@@ -0,0 +1,8 @@
+
+#include "Color.h"
+
+Color::Color(unsigned char red, unsigned char green, unsigned char blue)
+    : red(red), green(green), blue(blue){
+
+}
+
diff --git a/src/Color.h b/src/Color.h
new file mode 100644
index 0000000..3d75e99
--- /dev/null
+++ b/src/Color.h
@@ -0,0 +1,25 @@
+#ifndef LIBRARY_COLOR_H
+#define LIBRARY_COLOR_H
+
+
+/**
+ * color values represented as rgb values.
+ * @author Johannes Theiner
+ * @since 0.1.0
+ */
+class Color {
+
+private:
+    unsigned char red;
+    unsigned char green;
+    unsigned char blue;
+
+public:
+    Color(unsigned char red, unsigned char green, unsigned char blue);
+
+};
+
+const Color black = Color(0, 0, 0);
+const Color white = Color(255, 255, 255);
+
+#endif
diff --git a/src/EventType.h b/src/EventType.h
new file mode 100644
index 0000000..6daa1ea
--- /dev/null
+++ b/src/EventType.h
@@ -0,0 +1,20 @@
+#ifndef LIBRARY_EVENTTYPE_H
+#define LIBRARY_EVENTTYPE_H
+
+/**
+ * types of events.
+ * @since 0.1.0
+ * @uthor Johannes Theiner
+ */
+enum EventType {
+    Timer = 1,
+    MouseMove = 2,
+    MouseButton = 3,
+    KeyDown = 4,
+    KeyUp = 5,
+    UpdateControlRegisters = 6,
+    Redraw = 7,
+    RenderText = 8
+};
+
+#endif
diff --git a/src/Font.h b/src/Font.h
new file mode 100644
index 0000000..308dbc8
--- /dev/null
+++ b/src/Font.h
@@ -0,0 +1,17 @@
+#ifndef LIBRARY_FONT_H
+#define LIBRARY_FONT_H
+
+
+class Font {
+private:
+    Font();
+
+public:
+    std::string getName();
+    int getHeight();
+    int getWidth();
+
+};
+
+
+#endif
diff --git a/src/GraphicMode.h b/src/GraphicMode.h
new file mode 100644
index 0000000..d447ee8
--- /dev/null
+++ b/src/GraphicMode.h
@@ -0,0 +1,16 @@
+#ifndef LIBRARY_GRAPHICMODE_H
+#define LIBRARY_GRAPHICMODE_H
+
+/**
+ * all possible graphics modes.
+ * @author Johannes Theiner
+ * @since 0.1.0
+ */
+enum GraphicMode {
+    Text = 1,
+    TwoColors = 2,
+    Gray_256 = 3,
+    TrueColor = 4,
+};
+
+#endif
diff --git a/src/KeyCode.cpp b/src/KeyCode.cpp
new file mode 100644
index 0000000..6e7e2c7
--- /dev/null
+++ b/src/KeyCode.cpp
@@ -0,0 +1,9 @@
+
+#include "KeyCode.h"
+
+KeyCode::KeyCode(int value) : value(value) {}
+
+int KeyCode::getValue() {
+    return value;
+}
+
diff --git a/src/KeyCode.h b/src/KeyCode.h
new file mode 100644
index 0000000..65ab74d
--- /dev/null
+++ b/src/KeyCode.h
@@ -0,0 +1,15 @@
+#ifndef LIBRARY_KEYCODE_H
+#define LIBRARY_KEYCODE_H
+
+class KeyCode {
+private:
+    int value;
+public:
+    explicit KeyCode(int value);
+    int getValue();
+};
+
+const KeyCode Backspace = KeyCode(8);
+const KeyCode tabulator = KeyCode(9);
+
+#endif
diff --git a/src/LayoutVersion.h b/src/LayoutVersion.h
new file mode 100644
index 0000000..ce24e93
--- /dev/null
+++ b/src/LayoutVersion.h
@@ -0,0 +1,8 @@
+#ifndef LIBRARY_LAYOUTVERSION_H
+#define LIBRARY_LAYOUTVERSION_H
+
+enum LayoutVersion {
+   V1 = 1
+};
+
+#endif
diff --git a/src/internal.cpp b/src/internal.cpp
new file mode 100644
index 0000000..d9575d2
--- /dev/null
+++ b/src/internal.cpp
@@ -0,0 +1,5 @@
+#include "internal.h"
+
+Internal internal;
+
+
diff --git a/src/internal.h b/src/internal.h
new file mode 100644
index 0000000..65baee5
--- /dev/null
+++ b/src/internal.h
@@ -0,0 +1,97 @@
+#ifndef LIBRARY_INTERNAL_H
+#define LIBRARY_INTERNAL_H
+
+#include "EventType.h"
+#include "KeyCode.h"
+#include "LayoutVersion.h"
+#include "GraphicMode.h"
+#include "Color.h"
+
+/**
+ * the Control Registers
+ * @author Julian Hinxlage
+ * @since 0.1.0
+ */
+struct Registers{
+    int layout_version;
+    int trigger_reset;
+    int width_pixels;
+    int height_pixels;
+    GraphicMode graphicMode;
+    int autoRedrawInterval;
+    int timerInterruptInterval;
+    Color background_color;
+    Color foreground_color;
+    int characters_per_row;
+    int characters_per_column;
+    int textMode_font;
+    int textMode_font_width;
+    int textMode_font_height;
+    int mouse_pos_x;
+    int mouse_pos_y;
+    char keyboardBuffer[16];
+    int keyboardBuffer_index_w;
+    int keyboardBuffer_index_r;
+};
+
+struct InterruptEntry{
+    int pid;
+    int signum;
+};
+
+/**
+ * internal values for the library.
+ */
+struct Internal{
+    int sharedMemoryPid;
+};
+extern Internal internal;
+
+/**
+ * set layout version.
+ * @param newValue new layout version number.
+ */
+void setLayoutVersion(LayoutVersion newValue);
+
+/**
+ * set characters per line for current font.
+ * @param newValue characters per line.
+ */
+void setCharactersPerLine(int newValue);
+
+/**
+ * set characters per row for current font.
+ * @param newValue
+ */
+void setCharactersPerRow(int newValue);
+
+/**
+ * call a specific event.
+ * @param type
+ * @return true if there is a handler registered.
+ */
+bool callEvent(EventType type);
+
+/**
+ * set mouse position to x,y value.
+ * @param x x coordinate
+ * @param y y coordinate
+ */
+void setMousePosition(int x, int y);
+
+/**
+ * register pressed button.
+ * @param keyCode pressed key.
+ */
+void buttonPressed(KeyCode keyCode);
+
+// Shared Memory Layout
+// --------------------------------------------------------------------
+// struct ControlRegisters
+// char reserved[1024]
+// Interrupt Vector Table [64]
+// text area [max_textMode_width * max_textMode_height]
+// pixel area [max_height_pixels * max_height_pixels * sizeof(uint_32)]
+
+
+#endif
\ No newline at end of file
diff --git a/src/notes.txt b/src/notes.txt
new file mode 100644
index 0000000..355056c
--- /dev/null
+++ b/src/notes.txt
@@ -0,0 +1,12 @@
+//enum config file defaults {
+const int max_width_pixels = 800;
+const int max_height_pixels = 600;
+const int max_textMode_width = 800;
+const int max_textMode_height = 600;
+//};
+
+
+struct interruptVector {
+    int pid;
+    int signal;
+};
diff --git a/src/vkvm.cpp b/src/vkvm.cpp
new file mode 100644
index 0000000..45218e4
--- /dev/null
+++ b/src/vkvm.cpp
@@ -0,0 +1,6 @@
+#include "vkvm.h"
+#include "internal.h"
+
+void initialize(int pid) {
+    internal.sharedMemoryPid = pid;
+}
diff --git a/src/vkvm.h b/src/vkvm.h
new file mode 100644
index 0000000..a95731f
--- /dev/null
+++ b/src/vkvm.h
@@ -0,0 +1,201 @@
+#ifndef LIBRARY_VKVM_H
+#define LIBRARY_VKVM_H
+
+#include <string>
+#include <functional>
+#include "Color.h"
+#include "EventType.h"
+#include "GraphicMode.h"
+#include "Font.h"
+#include "KeyCode.h"
+#include "LayoutVersion.h"
+
+/**
+ * @since 0.1.0
+ * @author Johannes Theiner
+ */
+
+//TODO: better documentation
+
+/**
+ * initialize the connection with the shared-memory application
+ * @param pid pip of shared-memory application
+ */
+void initialize(int pid);
+
+/**
+ * set pixel at a x,y position to a certain color.
+ * @param x x coordinate of pixel
+ * @param y y coordinate of pixel
+ * @param color color of pixel
+ * @return true if operation succeeded, false if it failed.
+ */
+bool setPixel(int x, int y, Color color);
+
+/**
+ * get color of pixel at x,y position
+ * @param x x coordinate of pixel
+ * @param y y coordinate of pixel
+ * @return color of pixel
+ */
+Color getPixel(int x, int y);
+
+/**
+ * register handler for event.
+ * @param type type of event.
+ * @param handler function to call.
+ * @return true if handler could be registered, false if it failed.
+ */
+bool registerEvent(EventType type, std::function<void()> handler);
+
+/**
+ * set displayed text in Text mode
+ * @param text text to display
+ * @return if text could be set, false if it could not be set.
+ */
+bool setText(std::string text);
+
+/**
+ * get currently saved/displayed text.
+ */
+std::string getText();
+
+//Control registers start here
+
+//all modes
+
+/**
+ * get version of the used layout
+ * @return layout version
+ */
+LayoutVersion getLayoutVersion();
+
+/**
+ * reset all values to default.
+ */
+void reset();
+
+/**
+ * get width of window.
+ * @return width of window.
+ */
+int getWidth();
+
+/**
+ * set width of window.
+ * @param newValue new width for window.
+ */
+void setWidth(int newValue);
+
+/**
+ * get height for window.
+ * @return height of window.
+ */
+int getHeight();
+
+/**
+ * set height of window.
+ * @param newValue new height for window.
+ */
+void setHeight(int newValue);
+
+/**
+ * get graphics display mode.
+ * @return GraphicMode.
+ */
+GraphicMode getMode();
+
+/**
+ * set new graphics display mode.
+ * @param newValue new graphics display mode.
+ */
+void setMode(GraphicMode newValue);
+
+/**
+ * get interval between redraws in milliseconds.
+ */
+int getRedrawInterval();
+
+/**
+ * set interval between redraws.
+ * @param newValue new interval in milliseconds.
+ */
+void setRedrawInterval(int newValue);
+
+/**
+ * get time between timer interrupts.
+ * @return time between interrupts in milliseconds.
+ */
+int getTimerInterruptInterval();
+
+/**
+ * set time between timer interrupts.
+ * @param newValue new time between interrupts in milliseconds.
+ */
+void setTimerInterruptInterval(int newValue);
+
+//black/white mode
+
+/**
+ * get background color in two color mode.
+ * @return background color.
+ */
+Color getBackgroundColor();
+
+/**
+ * set background color in two color mode.
+ * @param newValue new background color.
+ */
+void setBackgroundColor(Color newValue);
+
+/**
+ * get foreground color in two color mode.
+ * @return foreground color.
+ */
+Color getForegroundColor();
+
+/**
+ * set foreground color in two color mode.
+ * @param newValue new foreground color.
+ */
+void setForegroundColor(Color newValue);
+
+//text mode
+
+/**
+ * get characters per row in text mode.
+ * @return characters per row.
+ */
+int getCharactersPerRow();
+
+/**
+ * get characters per column in text mode.
+ * @return characters per column.
+ */
+int getCharactersPerColumn();
+
+/**
+ * get currently used font in text mode.
+ * @return currently used font.
+ */
+Font getFont();
+
+/**
+ * set text mode font.
+ * @param newValue new text mode font.
+ */
+void setFont(Font newValue);
+
+/**
+ * get current mouse position
+ * @return mouse position as x,y pair
+ */
+std::pair<int, int> getMousePosition();
+
+/**
+ * get key code of last key press.
+ * @return KeyCode of last key press.
+ */
+KeyCode getLastPressedKey();
+
+#endif
\ No newline at end of file