If you are new and think you can learn the way to handle those people from reading a book and then just doing it, you run the risk of unintentionally hurting those people and making trouble for yourself as well.  

While the answer of "get a license" solves the agency relationship formed, even unintentionally, and state requirements of showing and advertising a property, there are still other issues.Wholesaling is basically a "net listing" CA is the only state I know of that allows a net listing with specific disclosures required.

I felt terrible, even though I told him to consult with his lawyer, b/c I could have got him into a huge legal mess unintentionally.

I'm worried about folks getting into trouble unintentionally from reading or watching something that could lead them down a bad path. 

I will actually have to give up my Deposit even if this was totally unintentional?

We had 12 applicants for the property (which means I unintentionally underpriced it) but there was a mini-bidding war so we were able to get a little more than we asked.

We've unintentionally flipped a couple of our "forever homes" ourselves for a pretty great profit so we have a similar tendency.

I don't know where the term "wholesaling" came from - maybe a car salesman - it only makes sense to me - if you are an investor (one who controls, buys, contracts for, auctions or assigns/flips real estate for a profit) you are purchasing below market ( it would not be a wise investor who pays retail - unless for personal use or redevelop to a higher and more profitable use) - - I prefer to be an investor - to me and others in this business who see many of these folks who call themselves "wholesales" as less sophisticated in the real estate business (only understanding a limited and small portion of real estate) not a serious professional and knowledgeable making equity profits - others see them as opportunist often times getting over on sellers sometimes unintentionally.

Harm is often unintentional and not malicious, so it's not about the tenant being a good person or not.  

I am a buyer myself, and I usually only trust my own numbers as some wholesalers (unintentionally) can make a mistake in theirs, which could have made them think what they had was a deal in the first place when it might not be.