Building a partnership

[Nathan J Boudreau]

Hello Biggerpockets! 

My name is Nathan Boudreau. The military brought me down here to SA. I got married to my beautiful wife and recently separated from the service. I am currently in the midst of becoming an agent, but I really want to start investing in rental properties as soon as possible. I have a really good buddy that I served with that also shares my goals in investing. I guess my question is, what is a good constructive way to form a partnership with him, are there legalities? Is there a format I can go off of that has worked for other partnerships? 

Thank you, 

-Nathan Boudreau 

-New Biggerpockets dude