A few questions, installation folder, file_get_contents_curl failed to download http://api.prestashop.com/xml/tab_modules_list_17.xml, tables getting large

[virtualpaul]

1- I am trying to find out where prestashop installed itself.  I am trying to find classes/tools.php but I could not find this file.  I am on Debian 9 and I installed prestashop 1.7.6.3.

2- I am getting a timeout error:

file_get_contents_curl failed to download http://api.prestashop.com/xml/tab_modules_list_17.xml

3- Those tables keep getting large even though the store is not even opened yet.  Is there a way to prevent this:

         ps_layered_filter_block.ibd = 574MB
         ps_connections.ibd = 18MB
         ps_guest.ibd = 17MB