[ilaksh]

Come up with an interesting project to work on in your favorite language. Keep adding more features until some functions have a lot of parameters. Then Google to see how you can group the variables together into objects so you don't have to pass so many variables around. Then just keep doing that in your new programs. After a few months or years you will get used to organizing code that way.

One thing you should not bother doing is to order giant piles of paper just so that you can say you read X famous author on OOP or Design Patterns or whatever. That is a waste of time and money now that we have Google and blogs/online articles etc. And anyway you are going to learn by doing it for X years or months, not by reading a book.

Also, be careful because people will to make it seem much more complicated than it is. The more complex or subtle aspects you are probably only going to remember or understand if you learn them through practice anyway.