If you want to learn an algorithm I suggest implementing it as well. Since this question does not state any prerequisites I can only suggest the hands down best

If you want to learn an algorithm I suggest implementing it as well. Since this question does not state any prerequisites I can only suggest the hands down best practical datastructure and algorithm study and reference book I've come accross: http://infolab.stanford.edu/~ullman/focs.html http://infolab.stanford.edu/~ullman/focs.html It's old but concise and very much to the point. All of the material is highly practical.