Ask HN: Anyone have questions about real estate investing?

I look at buying real estate like starting a business. You have costs, revenue, customers (tenants), suppliers, contractors, etc just like in any business.

A year out of college (2010) I bought a rental property with a good friend/ investment partner and I want to write an article sharing my experience.

If you have any specific questions ask them here and I'd be happy to address them in the article.