First, wholesaling is hard. I'll say that again. Wholesaling is hard.
Second, laws vary from state to state, and some states have ruled unfavorably regarding the legality of wholesaling, so make sure you know what NY has to say about it.
Finally, I'm going to ask you a question, actually 4, but they are related.
1. How good are you at deal evaluation? If you had to think about it for even 2 seconds, you need to practice evaluating deals, until you're an expert. Build your own workbook, so you have to work through the math. It's the only way you're really going to understand it.
2. How good are you at estimating rehab costs? Again, if you have to think about it, you need to build your skills.
3. How good are you at doing competitive analysis work to determine ARV? Yep, I'm going to tell you, if you have to think about it, then you need to practice.
4. How well do you understand the different exit strategies?
All of these questions point to skills that are required to succeed as a wholesaler. You have to be an expert marketer, and you have to think like an investor. You have to be able to nail your deal evaluations, which means the rehab & ARV in order to get to the point of knowing whether the deal is a "deal". If you find true "deals", you will have NO problem selling the deal. If you develop a reputation of providing good deals, investors will be beating your door down, but they have to be great deals. And, you have to understand your investor customers. Each one of them will have their own thresholds for profit, total renovation costs, etc.
I'm not trying to dissuade you, but you were given a good piece of advice in finding a mentor. A lot of the "gurus" will tell you that wholesaling is the perfect, low cost way to get into REI. It's hard, really hard, and you have to be really good at everything.