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    <p>Design patterns are great for various reasons:</p> <ol> <li>gives you a starting for solving common problems.</li> <li>gives developers a vocabulary to talk about certain ways of solving problems in a very compact manner.</li> <li>when working with developers who know design patterns and you use design patterns in your solutions they will understand the solutions a lot faster.</li> </ol> <p>But when your goal is just to learn design patterns I think you are missing the fundamentals. All design patterns are based on more common principles. High Cohesion, Low Coupling Open Closed Principle, DRY, Liskov Substitution Principle etc. For these fundamentals I would read the following books in this order:</p> <ol> <li><a href="http://rads.stackoverflow.com/amzn/click/0596008678" rel="noreferrer">Head First Object-Oriented Analysis and Design (Head First) [ILLUSTRATED] (Paperback)</a></li> <li><a href="http://rads.stackoverflow.com/amzn/click/0137488807" rel="noreferrer">Applying UML and Patterns (Hardcover)</a></li> <li><a href="http://rads.stackoverflow.com/amzn/click/0131857258" rel="noreferrer">Agile Principles, Patterns, and Practices in C# (Robert C. Martin Series) (Hardcover)</a></li> </ol> <p>After that you are ready for the basic gang of four design patterns</p> <ol start="4"> <li><a href="http://rads.stackoverflow.com/amzn/click/0596007124" rel="noreferrer">Head First Design Patterns (Head First) [ILLUSTRATED] (Paperback)</a></li> <li><a href="http://rads.stackoverflow.com/amzn/click/0201633612" rel="noreferrer">The BIBLE</a> </li> <li>A nice website (don't buy anything, it is not worth it) <a href="http://dofactory.com/Patterns/Patterns.aspx" rel="noreferrer">http://dofactory.com/Patterns/Patterns.aspx</a> (some implementations of this site are worth a discussion</li> </ol> <p>The next step:</p> <ol start="7"> <li><a href="http://rads.stackoverflow.com/amzn/click/0321127420" rel="noreferrer">Patterns of Enterprise Application Architecture (Addison-Wesley Signature Series) (Hardcover)</a></li> <li><a href="http://www.amazon.com/s/ref=nb_ss_b?url=search-alias%3Dstripbooks&amp;field-keywords=POSA&amp;x=0&amp;y=0" rel="noreferrer">The POSA books</a></li> </ol> <p>And always remember : the pattern is not the goal !</p>
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    1. USKeesDijk
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    1. COI think the fundamentals of OO (encapsulation, inheritance, polymorphism, etc.) are enough to knowledge to start learning design patterns. You can learn the other principles (High Cohesion, Low Coupling Open Closed Principle, DRY, Liskov Substitution Principle, etc.) through learning patterns.
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    2. COI agree you can learn design patterns with only the fundamentals of OO. But then you make it to the point that you can make a pattern work but not yet fully understand why this is good design, what trade-offs you have made and how you can make variations in the patterns.
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