Hope you are doing great.
Just download and expand our installation tar.
Copy the phoenix server jar that is compatible with your HBase installation into the lib directory of every region server
restart the region servers
add the phoenix client jar to the classpath of your HBase client
download and setup SQuirrel as your SQL client so you can issue adhoc SQL against your HBase cluster
Please also have a look on the below links for details:
Please try and let us know if you face any issue so we can help you out.