the readme is about 50 times longer than anything else u will find about installing android anywhere else
the different versions are just like in windows mobile, theres not much to explain, its rather up to ur personal preference. doesnt take as long as flashing a wm rom, so its easy to try out more versions, especially with more sd cards.
dual boot is easy:
1. install the cab
2. open the dual boot program and make all your settings, for example: auto boot android (click on the checkbox/ratio under android logo), check auto boot checkbox and check fast boot (means 3 instead of 10 secs).
3. restart your device, DONT LAUNCH HARET because that will destroy all the dualboot settings. if you restart/shutdown the device normally, the settings will be stored and android will automatically booted at next startup (or whatever you set before)
if you have android autoboot and u want to boot wm, just QUICKLY press the wm LOGO when the dual boot screen appears.
i might include this in the readme soon, just dont have the time right now unfortunally