Wiki Coding books

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I am not sure if anyone has been looking into which books to get for 2013, but I have a couple of questions. First I am not sure if I should get ICD-10 CM Mappings or ICD-10 Complete Official Draft Code Set. Also does anyone have the CPT- Reference Guide for Cardiology Coding 2013, and is it worht the investment. Any thoughts will be helpful
Thank you Nancy
I'm self teaching, and think I made a mistake in doing so, but can someone tell me where I can find out how to set up books and if there are any videos I could watch?