[mlvljr]

Search for the history of the discipline, find the crucial names and study the papers + listen to talks, then think all by by yourself and decide whether / to which degree things are applicable to the contexts of your interest.

That would be the best way.

Names would be: Dijkstra, Parnas, Kay, Booch, and many others. Once you assemble a nice collection of notes, links and questions, you'll be allright and will never fall for "OO is A, B and C!" oversimplified nonsense many books attempt to sell.

Do not believe any comment in this thread either, rather take things with a (huge) grain of salt -- remember, we're dealing with a Holy Grail here, and everyone interested is quite opinionated :)