I have dig up some of my older community articles for the LiveCycle ES that are useful:
1 - Creating enterprise database components.
2 - Displaying LiveCycle ES process data in Flex graphs.
3 - Using Java servlets to invoke LiveCycle ES3 processes.
4 - Creating form rendering ASP.NET applications.
5 - Invoking web services using custom components.
By the way, you can use Adobe Experience Manager and LiveCycle ES as well. See this community article:
Integrating LiveCycle into Adobe CQ applications
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I (Scott Macdonald) am a Senior Digital Marketing Community Manager at Adobe Systems with 20 years in the high tech industry. I am also a programmer with knowledge in Java, JavaScript, C#,C++, HTML, XML and ActionScript. If you would like to see more CQ or other Adobe Digital Marketing end to end articles like this, then leave a comment and let me know what content you would like to see.
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Twitter: Follow the Digital Marketing Customer Care team on Twitter @AdobeExpCare.