Rooted with questions

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http://forum.xda-developers.com – I just rooted my kindle fire hd and now wondering exactly how to get the apps I want on there. The reason I rooted it was mainly that I wanted GO Launcher HD and also the Google Play Store. How do I go about getting these to work on tablet now? I thought that maybe now that I was rooted I would just be able to download the files .apk and install them using ES File Explorer, but when I tried with GO Launcher HD it installed but nothing happened? Where do I go from here? (HowTos)