I don't know about anyone else trying to get a grip on something in SAP, but I have found out that what used to be OSS and now are SAP Notes can come quite handy. They seem a bit odd at times, but they offer the last line of defense before the actual test and debug of a particular issue or problem one is facing during implementation and support.
One particular area that I'm trying to get a better handle on is SEM-BCS and it is of particular interest to me, but others can be equally applicable. What I have tried below is to start with the dozen of high-level notes to see what they have spawned. My goal is to have all of them in one place and to show how they relate to each other.
For the list below, I have also added little "takeaways" for each note to summarize the content. Please note that your id may need access to view the SAP Notes, the ordering scheme is copied from the top-level note and comments are purely mine and not officially by SAP.
The first note is exploded to show the referenced notes and others follow as a list.
You can find more detail notes here: bit.ly/RTfdd