- accounting and financial statement analysis (useful in pricing and fundraising) - quantitative marketing models (useful in forecasting + modeling) - market

- accounting and financial statement analysis (useful in pricing and fundraising) - quantitative marketing models (useful in forecasting + modeling) - market research techniques (probably the most valuable skill to building products) - VC from two internships @ early stage funds (useful in understanding how VC's think) - negotiations - entrepreneurship classes on opportunity analysis, fundraising, and valuation (useful in helping to avoid solving the wrong problems; articulating the business to investors; building with the end/exit in mind)