The need for speed

My first Geodirectory site just went live http://www.behindeveryboss.com and I’m now trying to optimise the speed and page loads.

Using this tool – https://gtmetrix.com/reports/www.behindeveryboss.com/CbFssi7m I have a page load time of 6.9s which isn’t great. If you look at the waterfall chart the very first item takes 2.7s, is there anyone here that can help me understand what thats all about and how to optimise it?

Response Headers
Date
Thu, 07 Jul 2016 10:50:18 GMT
Server
Apache
Expires
Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control
no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma
no-cache
Vary
Cookie,Accept-Encoding,User-Agent
Link
<http://www.behindeveryboss.com/wp-json/&gt;; rel=”https://api.w.org/”, <http://www.behindeveryboss.com
/>; rel=shortlink
Set-Cookie
[removed (50 bytes)]
Content-Encoding
gzip
Content-Length
30546
Keep-Alive
timeout=5, max=100
Connection
Keep-Alive
Content-Type
text/html; charset=UTF-8
Request Headers
Host
http://www.behindeveryboss.com
User-Agent
Mozilla/5.0 (X11; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0
Accept
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language
en-US,en;q=0.5
Accept-Encoding
gzip, deflate
Connection
keep-alive