If you want to turn your Amazon Kindle device into a Android tablet and install some apps from Android Market then you should read this tutorial. Because Kindle Fire is limited to downloading apps from Amazon AppStore you are not able to download them from other sources such as Android Market, but with few straightforward modification on your Kindle you can easily bypass thos limitations and enjoy some of the apps from Android market e.g. Google Maps.
To get started follow steps below
Step 1: To allow your rooted Kindle fire to access Google Services you will need to download GoogleServicesFramework.apk on your computer. The easiest way I find doing this is by downloading the entire Google Apps .apk package and then extract only the GoogleServicesFramework.apk file from GApps.rar using some free archive tools such as WinRar or WinZip. If you know easier way to do this, then do it your way.
Step 2: Now download latest version of Android Market application (Vending.apk) from this link
Step 3: To be able to modify read/write permissions on a rooted Android Device you will need to download Android file-management app. The most easiest way to do that is by downloading File Expert from Amazon AppStore for Android for free
Step 4: Now we need to connect Kindle Fire to a Windows computer using a USB cable and upload .apk files your previously downloaded
Step 5: Next, install File Expert app and give it superuser permissions by opening the app. Inside app tap on Menu key and then navigate to Settings menu
Step 6: From here open File Explorer settings and enable Root Explorer options. By doing this you will be able to modify app read/write permissions which will allow the Android Market app to download and install apps on your Amazon Kindle Fire
Step 7: Now open the File Expert app, select the GoogleserviceFramework.apk file your previously uploaded and tap on Install.
Step 8: Wait untill installation is finished and then go to Vending.apk file, tap and hold to open the file menu. From file menu select Cut option and navigate to the App folder separated inside your System folder.
Step 9: Tap on the Menu key again and tap Paste to move the Vending.apk file into the App folder
Step 10: Now when you have successfully moved Vending.apk into the App folder, tap and hold on that same file and from menu that appears choose Permissions. Now change file permissions to match to other apps permissions inside that folder which should be Owner – Read/Write, Group – Read, Others – Read.
Step 11: Once you are done with permissions changes tap on Vending.apk file and install it on your Kindle
Step 12: Once installation is finished reboot your Amazon Kindle Fire. However, next time after you lunch and start Kindle Fire you wont see Android Market on your Kindle launcher. For that you will need to download and install custom launcher such as GO Launcher EX.
Step 13: As out last step, we will need to open Android Market app on our Kindle Fire and login into your Google account.
You are done! I hope you will enjoy using Android Market on your Kindle, but be very careful which app you are installing because Kindle is not intended to access Android Market and not all apps will work. If you by any chance face with crashing or problems to download the app, simply reboot your Kindle.