How to attract cofounders: Share your vision with others. See who buys into it. Start with friends and family then expand to other networks.

If you are scared of having your idea stolen: Leonard Kim’s answer to What’s the best way to discuss an idea for a startup in public without it being stolen?

How to structure shares: Leonard Kim’s answer to How should equity be split between founders, (early) employees, consultants and investors when the company is bootstrapped?

Do the bare minimum. At least buy your domains and all the inexpensive things that come with the business.