How To Compare And Interpret Output In Cluster Analysis?

Good Day! I'm currently making my thesis and I'm already on the chapter of analyzing my research findings. I'm using cluster analysis specifically two-step cluster in analyzing my data. I already have the output, and was able to form three clusters. My problem for now is how do I compare and interpret the grouped data or at least identifying/determining labels of each cluster? I'm using SPSS 22 by the way.