Facebook like 1.9.6

Hi! I don’t know where is a problem, but any plugin is not working on my blog. I wanted to add Facebook like button, activated Facebook like 1.9.6 plugin in my admin board, but unfortunatelly it doesn’t work either as I can’t see any facebook lke buttons on my blog. I suppose the problem might be in my theme (Coraline theme), I should add php line to my template probably, but I can’t find a propper instructions for this…. Did anybody have the same problem or anybody who uses the same plugin, please help. Could You give me step by step instructions what should I change? Thanks in advance