Khang runs the youtube channel Wholesale To Millions and has just released his first product. He appears to be a real and successful practitioner and NOT a product pusher.  Gives a lot of information on his videos.

The script for talking with Sellers, what to say and how to say it, is the real value he is offering.

Real Estate course

What is real estate? Learn about Real Estate

Real estate investing involves the purchase, ownership, management, rental and/or sale of real estate for profit.
Improvement of realty property as part of a real estate investment strategy is generally considered to be a sub-specialty of real estate investing called real estate development.
Real estate is an asset form with limited liquidity relative to other investments,
it is also capital intensive (although capital may be gained through mortgage leverage) and is highly cash flow dependent.
If these factors are not well understood and managed by the investor, real estate becomes a risky investment.