1) The key things to focus on before starting a startup are building a great team, understanding your market thoroughly, and learning as much as possible about startups. 2) It is important to execute your idea quickly by releasing an unfinished product, focus on mobile experience, and make sure users have an amazing experience from the start. 3) Other advice includes raising money when you have leverage not just when you need it, being resilient through many failures, building strong networks, and knowing that success will not come easy or fast.