Tutorials, manuals, documentation for using SAP JCo 3.x

Do you know any decent documentation source for using JCo 3.x?

Most of the materials I could find are pretty outdated and refer to previous versions (JCo 2.x). In case, anyone wondered, the things I found are:

• Tips&Tricks JCo programming
• ftp://ftp.sap.com/pub/sapjco/sapjco2xDocs.zip
• The JCo distribution contains Javadoc documentation and a few examples.

This one is for JCo 3, but covers only the basics:

• http://www.vogella.de/articles/SAPJCo/article.html

Go to http://service.sap.com/connectors (You'll need an SAP service market place account), click on "SAP Java Connector" > Tools and Services in the left hand navigation tree. You can download the JCO release 3.0.x from there and also download the SAP JCO 3.0 documentation as a PDF file.