How long does it take you to study an individual business?

[webbrowan]

I think it really depends on whether information for the company is readily available and what kind of industry the business deals in. If it's something that you're absolutely clueless about then obviously investing in it is going to be a rather risky financial decision for you! The more you know about the business and how it works, in the finance sense, or with its own buyers and suppliers, the easier it is for you to make a decision whether to invest in it or not! And of course if you can see ledgers and accounts then that helps too!