I want to master Hadoop by studying this book, but starting from Chapter 2, the order of topics feels very confusing. The book suddenly directs you to Appendix C for working with weather data without any prior Hadoop installation. There's no guidance to first install Hadoop by following Appendices A and B before using Hadoop with bash scripting. Then, when you return to Chapter 2, it begins analyzing data with awk and suddenly jumps to Hadoop programming with Java. Could someone please clarify the proper learning sequence for beginners?