Evaluating an equity investment means doing your homework to make an informed decision. You don't need to be a financial expert, but you should carefully review the legal documents provided with the offer (such as the Prospectus or Offering Memorandum). 

Pay special attention to the following areas:

• The Business Model: What does the company do and how does it make money?
• Use of Funds: How will your investment be used to grow the business?
• The Management Team: Who is running the company, and what is their experience?
• Risk Factors: The legal documents will have a dedicated section outlining the key risks. Read this very carefully.
• Shareholder Rights: Understand what your shares entitle you to, e.g. voting, dividends.

After reviewing these points, you should feel comfortable with the investment and its risks. If you are unsure about any aspect or whether it suits your personal financial situation, it is always wise to consult an independent financial advisor.