3 Install SolrBridge package (preconfigured solr instance).

-Get inside the folder apache-solr-3.6.1 by the command:
cd /usr/local/apache-solr-3.6.1
-Put the folder solrbridge (the sub folder included in the file Magento_Solr_Bridge_1.8.0) into /usr/local/
apache-solr-3.6.1.
-Finally, there is a folder solrbridge in /usr/local/apache-solr-3.6.1