Located vacant properties...what's next???

[Dorithie Morrow]

Hello, I am new to real estate investing with the focus on wholesaling. I was driving in a neighborhood where my grandmother lives and saw a few houses that were vacant. I wrote down the addresses and looked at the public records website to find out who owns each property. I need to know where do I go from here...should I send the owners a letter letting them know I would like to purchase their property for cash or should I find more about the property before contacting the owners?