object - Need Help Starting With Objective-C Basics -

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i beginning learn objective-c , looking place start. every book pick starts off know object , instance of object is. there anywhere online or in book basics of objects , classes , other knowledge need read books have? here of terms need know books assuming know:

object-oriented terms

class, instance, message, method, instance variable, inheritance, superclass/subclass, , protocol

any appreciated. not slow learner, of information have found on language far seems start off know information , terms above. need pointed in right direction. have knowledge of other programming languages, looking add library.

apple's the objective-c programming language great introduction of these concepts appear in objective-c , cocoa. rather assuming background in other oo languages, introduces objective-c cohesive whole.


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