All posts and hacks I've found have failed with my edge cases. The available Cocoa Static Library in 4.2 worked fine.

Intro basics aren't enough
_ http://cocoadevcentral.com/d/learn_objectivec/

Properties, dot syntax crisis
_ http://eschatologist.net/blog/?p=160

The templates may be useful in the future
_ https://github.com/davidmorford/BuildKit
_ https://github.com/kstenerud/iOS-Universal-Framework

Basic Debugging
_ http://mobile.tutsplus.com/tutorials/iphone/xcode-debugging_iphone-sdk/

Sidebar procrastination
_ http://akosma.com/2009/07/28/code-organization-in-xcode-projects/

Link issues can come when libs have refs to xibs in the project.
_ http://stackoverflow.com/questions/1725881/unknown-class-myclass-in-interface-builder-file-error-at-runtime

Class definitions in headers might be lost or hidden when wrapping classes in a library. See class forwarding.
_ http://stackoverflow.com/questions/2722096/xcode-project-complains-about-missing-files-if-a-linked-framework-contains-priva

Key-value coding/observing, events
_ http://cocoawithlove.com/2010/01/5-key-value-coding-approaches-in-cocoa.html
_ http://blog.shoguniphicus.com/2011/03/07/objective-c-nsnotification-key-value-observing/
_ http://www.youtube.com/watch?v=n6Fu15G_XmU