Real estate investment club

I am currently in the process of forming a real estate investment club . I have 30 people already interested and I am looking for more. My plan is for everybody to contribute at least $6k a year and we will start by buying land and building on it single family homes. Once the construction is complete we will sell and split the profits. What I would like to know is the best way to form an Llc and i would like to grow my network of legal professionals, contractors and investors. I am in Southern California