No matter what company you're interested in investing in, I can answer the following questions:
What is their revenue model? Are their projections realistic? What are their key revenue drivers?
Who are the main competitors? How long have they been in the space? What are their strengths/weaknesses?
Who is on their management team? What are their backgrounds? Are they qualified to launch this venture?
Who is their primary target market? Who are their power users? Is this a viable beachhead?
What is the risk profile of the company? What is their potential to grow?
Basic Due Diligence Package
Market Analysis, Competitive Analysis, Management Calls, Customer Calls, SWOT Analysis