Building Funds to Flip by wholesaling

I guess the big question now is,... How?

I'm grasping the ideas and feel this is something I could manage, but, Reading is one thing 

I'm a visual learner. My biggest hurdle at the moment funding, money down, to a Hard money Lender. I don't have extra money lying around in reserve for " a rainy day". i wish I did, well, I guess that's why I am here! I want to start a revenue stream, then pitch the idea and concept to my wife. Is it risky not telling my latest venture, sure it is! However; if I can complete a few small or one large deal that I can bring to her and say. i went behind your back, I didn't spend a lot of our money, and in return I earned this in profit. It will be a huge selling point for her because she can see it works! 

Problem, as stated above,  is I don"t have the extra cash in reserve to put 5%-10% down for a loan whether it be a hard money lender or bank. I know there is money to be earned in wholesaling.

Is wholesaling a good way to get a foot in the door?  

Build my wealth for the down payments to finance a flip?

What are some good resources her on Bigger Pockets or elsewhere I can read up on?

Feedback, thoughts, advise, and what ever is offered will be appreciated!