Starting an LLC with Partner and Investors

[Andrew Merritt]

Hey All, I'm looking to do a big project (for me, anyways) and will need outside money for the first time. I'm starting an LLC w/ my brother in law. We're going to be a partnership, but we're probably going to need more money than the two of us have. How do we bring in other investors (they would be my inlaws, his parents)? Would we need to make them partners too, or is there a better way to set this up? I just filed my articles of organization yesterday so this is all very new.

If someone could point me to a good resource for figuring all of this stuff out that would be great.