Creating and using a Library

I'm rather new to XCode.

I've created a Library (Using OS X/Framework & Library/Cocoa Library).

XCode compiles and creates a .dylib file, placing into Library/Developer/Xcode/DerivedData/appname/Build/Products/Debug/appname.dylib.

How do I now make this Library available to used in my apps? 

I've added this Library in a test app under Build Phases/Link Binary With Libraries but am not sure from here how to access my Library functions in the test app.

Ideas?

Thanks

-Mike

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