Getting incorporated, LLC's, serial LLC's, etc.

[Justin Situ]

Hey BP

So I want to start real estate investing but am unsure of which, in any, business entity I should utilize at this point. I intend to buy between one and four properties that may or may not be in the current state I reside in; this is all contingent on the opportunities that present themselves or as I uncover them myself. With that said, what are the pro's and con's of each? Is there a definitive best one to use? Who/what do I need to contact in order to get my entity off the ground?