Obviously investing always carries some risk, but if you follow the principles in Rule #1 investing, then this site should be a "one stop shop" for all the calculations/resources you may need.
-- https://www.isthisstockgood.com/
The Big Five numbers are:
- Return on Investment Capital (ROIC)
- Sales growth rate
- Earnings per Share (EPS) growth rate
- Equity, or Book Value per Share (BVPS), growth rate
- Free Cash Flow (FCF or Cash) growth rate
-- https://www.linkedin.com/pulse/essential-financial-terms-every-investor-needs-know-phil-town