New Wholesaler in Montgomery, AL

I am a newbie. How do I find an agreement contract where I can legally hold the property for a number of days until I sell it to an investor? I have seen it here on the boards but I can’t remember the name of it… :-\

  1. If I contact the owner of the property I am intersted in do I let them know that I will hold it for 30 days or so to sell it to an investor?
    Can you hold the property with little to no money?

  2. Do I pay any closing costs?

Sorry, about all the questions. I am excited because I have found 2 vacant duplexes that I need to jump on soon! I am so nervous to contact people but I am eager to make it in real estate investing!