Updated readme

Author: NathanCastle

README.md

@@ -1,17 +1,57 @@
-# BootShellCredentialProvider
+# BootShellCredentialProvider - Bringing Linux DEs to Windows
 
 BSCP lets you boot Windows directly into a Linux desktop experience, using Windows' native Logon UI and a combination of Xming & WSL upon login. 
 
+![](/login.PNG)
+![](/xfce.gif)
+![](/mate.gif)
+![](/kde.gif)
+
+## Getting Started
+
+Prerequisites:
+
+- VcXsrv must be installed. This is a free Xming alternative that happens to be more stable and featured. It is available on chocolatey, otherwise: https://sourceforge.net/projects/vcxsrv/ 
+- Windows Subsystem for Linux, including the bash environment, is installed and working
+- You have some sense of which Linux DEs you'd like to explore and have installed them through WSL. See [here](https://github.com/NathanCastle/BootShellCredentialProvider/blob/master/BSCP/Configurator/wsl_setup.sh) for inspiration/a runnable script to do it for you. Note: doing everything in that file *should* work, but will take a long time regardless.
+
+Installing & Configuring:
+
+- Download and run the installer. Do not change any of the defaults; the defaults work. 
+- Run BSCP Configurator (a shortcut in your Start Menu)
+- Configure the settings as desired. Note that the defaults should work with the environment created by the setup scritpt mentioned above. 
+- In the unlikely event that BSCP Configurator crashes upon attempting to save, you have a permissions issue. Try running again as an administrator. If that doesn't work, you probably need to give yourself Full Control permissions on `HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WinLogon`.
+- Sign out and behold!
+
+Usage Notes:
+
+- Ctrl+Alt+Del still works while in the Linux DEs. This is how you can sign out, start the Task Manager, etc.
+- Win+R does not work while Explorer is not running as the system Shell. Use Task Manager (through Ctrl+Alt+Del) to start Windows programs
+- There's a chance Windows Explorer (as file explorer, not shell) will run in the foreground when the DE starts. You can safely ignore or close it. 
+- The uninstaller isn't particularly smart. You'll want to use the Configurator to disable the feature first, then run the uninstaller.
+- Once you've installed this, you'll want to use it as your primary way of logging in; It has no way of updating the shell settings if you log in through another Credential Provider (e.g. Pin logon or Windows Hello). 
+
+## About the Project
 This project consists of several components:
 
 - Configurator: friendly desktop app for modifying the configuration
 - RegProvider: helper library for interacting with the registry (nothing special here)
 - ConfigurableShell: Replaces the Windows Explorer Shell at boot time. Checks the registry settings and loads the specified desktop environment (Windows Explorer, XFCE, or whatever else you can get to work)
 - BootShellCredentialProvider: Plugin for WinLogon using the CredentialProvider v2 interface. This component shows you the available desktop environments and sets the selected one in the registry
 
-Note: This project requires extensive modification to the registry to work and executes native code both before and after logging in. Use at own risk. 
+## Risks, Security & Full Disclosure
 
-Demo Pics:
+You probably shouldn't do this on anything resembling a production/mission-critical system, for several reasons:
 
-![](/login.PNG)
-![](/desktop.PNG)
+- You're running my unmanaged c++ code inside WinLogon. If my code crashes, WinLogon crashes; you will not be able to use your PC if this happens. 
+- My unmanaged code is handling your Windows password. This is borrowed from Microsoft's sample/template. Skepticism is encouraged.
+- Components of this system rely on weakening the security of various system registry keys. These are critical to Windows' ability to present a coherent desktop experience.
+- This is my second serious C++ project ever, and first with the Win32 API. Good luck.
+
+## Contribution & Feedback
+
+I'd appreciate any and all (constructive) feedback on this project, and will of course accept PRs. Feel free to file issues on this project if you have anything to share. 
+
+## Licensing
+
+Most of this project is released under the MIT License. The Credential Provider component is released under the MS-LPL license because it is derived from the SampleV2CredentialProvider project.