LLC and business credit cards

[Maria Luna]

Hello guys, I have a question and hope that somebody can explain this to me a little more. When is it convenient to have a LLC and what is really the purpose of it? I been reading about it, and feel like I can use it for the purpose of getting a business credit card. But I only own two single family homes, I live in one and renting the other one. So idk if this would be beneficial to do for me or not. I do plan on buying more rental properties in the near future.