Invisible Files How to make the Finder show all those invisible files.
Customizing Xcode How to set up project and file templates.
Spotlight Headers shows how to make Spotlight index other important developer folders.
Searching through the MailingLists archives can often turn up clues on various problems.
Problems with C++ exceptions and fvisibility=hidden
[Technical Q&A QA1475] Tips for searching Headers, APIs and ADC reference material