How to create a group of investors locally (family and friends)?

[Jim Coleman]

Hello all, 

Me and my cousin started to save up money to purchase a rental property. We are starting off small saving about $100 a week each with the hopes of purchaing are first rental at the start of next year. 

I was thinking of adding more people to our venture , but I wasn't sure how to structure it. Me and my cousin have a good understanding and we will be using my credit to purchase the property or should I be considering using business credit once i have my LLC up?

Just want to know how to create a family investment group in terms of structure.