I\'m creating an installation package with WiX 3.6 primarily so I can take advantage of the Burn bootstrapping features. So far I have several MSI packages bundled together
In addition to the other resources listed here, a good bare-bones example of a custom bootstrapper application for Burn is Custom WiX Managed Bootstrapper Application.
I found that this is a good place to start with before digging deeper into other more thorough examples like the WixBA project in the WiX sources.