Negotiations on a property owned by someone with experience

[Patryk Domanski]

Me and my business partner have found a vacant property that we want to aquire . We found the owner , who is an owner of a massive construction company in our area ( he also had a class action lawsuit case against Zillow ) we have not closed any deals yet. Looking for our first one. The question is . How should we approach him without looking like beginners ? We found him on Facebook . Would it be wise to messege him through there and how should we open up the conversation ?