The official Gust guide to angel investing will be the first complete, up-to-date guide to the subject, including what angel investing is, how one gets started, how to find deal flow, evaluate opportunities, negotiate terms, join an angel group, structure investments, work with venture capital funds, and, of course, use the Gust platform to do all of the above. The initial target audience is the 7,000,000+ people in the US who qualify as "accredited investors" because they have incomes over $200K or assets of over $1M. These are the people who are legally allowed to invest in private companies. A secondary market includes the 33,000,000 "mass affluent" in the US who are potential participants in the equity crowdfunding industry established by Congress in the JOBS Act of 2012. Follow-on audiences are similarly situated people in every other country, as Gust currently supports accredited investors.