how to deal with private investors?

Hi everyone i’ve got a question regarding private investors. All those that deal with investors, what kind of paperwork you guys provide them? any contracts with terms? can I draw these up on my own or do they need to be some sort of official documents?

It’s a newbie question i know. I’ve usually used my own cash but would like to work with private investors at this point and want to know how to pull it off from the legal side…

Thanks :biggrin