Ask HN: My site is super slow, how do you increase page load times?

Hey HN, Me and my co-founder are about to launch Thirsty.com, we are not too experienced with scaling and page load times and it shows :( Do you guys have any ideas for us on what we should do? We already added cloudflare, compressed the CSS file, but besides that we don't have any other ideas. We are a rails app.