Ask HN: How to get my website running/loading faster

In regards to my start-up (www.ommageo.com) I have received a lot of great advice on HN.

One thing no one mentioned was how slow my website loads, but it is a clear problem. Currently the website is hosted on a GoDaddy shared server, naturally I have considered upgrading to VPN or Dedicated, but I am not sure that will get me to the performance I am seeking. Bootstrapping the startup the hosting upgrade is an expensive and time consuming experiment (webpages/db) just to find out if this is going to solve the speed issues.

Any insight, advice,or suggestions?