This is a never-ending subject, in which you can lose yourself for days. Find the Competition Basics article and go through that to ensure you haven’t left anything out. Then you can add to it over time with more detail and ideas from the other articles.
ERRC Curve
The single most important tool for understanding and explaining your business… More ERRC Curve...
Niche or Mass Market?
Map your position on the competitive landscape, and your proposition on a frontier curve… More Niche or Mass Market?...
Defensibility
Your output should be differentiated because of a core resource that cannot be copied… More Defensibility...
Pixar Pitch
The best way to check you are really doing something different… More Pixar Pitch...
Value Sticks
The relationship between customer WTP, price, and cost will decide sales volumes and profits… More Value Sticks...