If you do not own a business, you can still choose to join as a B1G1 member if you wish to support the organization and give through B1G1.
The tools in B1G1 were created with the aim of making it easy for businesses to give meaningfully. But individuals too can utilize B1G1 to give to projects, create a giving habit with the Giving Stories (e.g. When I go for a run, I give bricks to build a school), and utilize the giving tools and resources to track the exact number of impacts you create through what you give.
Alternatively, individuals can support B1G1 by spreading the word to business owners you know or giving to featured projects for the month.