diff --git a/README.md b/README.md
index 26e0977..e769596 100644
--- a/README.md
+++ b/README.md
@@ -1,26 +1,123 @@
 # python-orvibo
 
-Control Orvibo devices with Python 3. Currently supports the S20 WiFi Smart Switch.
+A Python 3 library to control Orvibo devices, specifically the S20 WiFi Smart Switch. This library allows for device discovery, status checking, and remote control (on/off) of the smart switch over a local network.
+
+## Features
+
+- **Discover Orvibo S20 devices** on your local network.
+- **Query the current state** (on/off) of a device.
+- **Turn devices on or off** remotely.
+- **Lightweight and easy-to-use** with minimal dependencies.
+
+## Installation
+
+Install the library using pip:
+
+```bash
+pip install orvibo
+```
 
 ## Usage
 
 ```python
 from orvibo.s20 import S20, discover
 
-hosts = discover() # Discover devices on your local network.
-s20 = S20("x.x.x.x") # Use a discovered host, or supply a known host.
-print(s20.on) # Current state (True = ON, False = OFF).
-s20.on = True # Turn it on.
-s20.on = False # Turn it off.
+# Discover devices on your local network
+hosts = discover()
+
+# Initialize the S20 switch using a discovered host or a known IP address
+s20 = S20("192.168.1.100")
+
+# Check the current state (True = ON, False = OFF)
+print(s20.on)
+
+# Turn the switch on
+s20.on = True
+
+# Turn the switch off
+s20.on = False
+```
+
+## Detailed Example
+
+Here's a more detailed example demonstrating the usage of the library:
+
+```python
+import time
+from orvibo.s20 import S20, discover
+
+# Discover available S20 devices on the network
+hosts = discover()
+print("Discovered devices:", hosts)
+
+# Initialize an S20 device using the first discovered host
+if hosts:
+    host_ip = list(hosts.keys())[0]
+    s20 = S20(host_ip)
+    
+    # Print the current state
+    print("Current state:", "ON" if s20.on else "OFF")
+    
+    # Toggle the state of the switch
+    s20.on = not s20.on
+    print("New state:", "ON" if s20.on else "OFF")
+    
+    # Wait for 5 seconds
+    time.sleep(5)
+    
+    # Turn off the switch
+    s20.on = False
+    print("Switch turned off")
+else:
+    print("No devices found")
 ```
 
 ## Contributions
 
-Pull requests are welcome. Possible areas for improvement:
+Pull requests are welcome! Here are some possible areas for improvement:
+
+- Add support for additional Orvibo devices.
+- Expand the functionality of the S20 class to include timers, configuration options, and more.
+
+To contribute, fork the repository, make your changes, and submit a pull request.
+
+## Technical Details
+
+The library communicates with the Orvibo S20 using UDP packets. It handles device discovery, subscription, and control using predefined packet formats.
+
+### Packet Structure
+
+- **MAGIC:** The magic bytes used for packet identification.
+- **DISCOVERY:** Payload for discovering devices.
+- **SUBSCRIBE:** Payload for subscribing to a device.
+- **CONTROL:** Payload for controlling a device's state (on/off).
+
+### Constants
+
+- **PORT:** The UDP port used for communication (default: 10000).
+- **RETRIES:** Number of retries for sending packets.
+- **TIMEOUT:** Timeout for receiving responses.
+- **DISCOVERY_TIMEOUT:** Timeout for the discovery process.
+- **SUBSCRIPTION_TIMEOUT:** Timeout for renewing device subscriptions.
+
+### Internal Methods
+
+- **_setup():** Initializes the UDP socket and starts the listener thread.
+- **_listen():** Listens for incoming UDP packets.
+- **_device_time(tab):** Converts device time to a human-readable format.
+- **_udp_transact(payload, handler, \*args, broadcast=False, timeout=TIMEOUT):** Handles UDP transactions with retries and timeouts.
+
+### Class: `S20`
 
-* Additional Orvibo devices.
-* Expand S20 functions: Timers, configuration, etc
+- **__init__(self, host, mac=None):** Initializes the S20 object with the device's IP and MAC address.
+- **on:** Property to get or set the device's state.
+- **_discover_mac(self):** Discovers the MAC address of the device.
+- **_subscribe(self):** Subscribes to the device to get its state and enable control.
+- **_subscription_is_recent(self):** Checks if the subscription is recent.
+- **_control(self, state):** Sends a control command to the device to change its state.
+- **_turn_on(self):** Turns the device on.
+- **_turn_off(self):** Turns the device off.
 
 ## Disclaimer
 
-Not affiliated with Shenzhen Orvibo Electronics Co., Ltd.
+This project is not affiliated with Shenzhen Orvibo Electronics Co., Ltd. Use this library at your own risk.