Follow what it is said in the link, it is simple to set up the HBase environment.
But pay attention that before start hbase, make sure hadoop ,zookeeper are running. Mention that because of the java version conflict, the hadoop nodes cannot run up at the same time. So please check the webpage of hadoop health to make sure there are 2 living nodes. Then start the hbase.
Pay attention to : the hostname so, check the /etc/hosts. Because if there is some problem, the file system will act weird.