What is Reddit's opinion of The Art of Closing Any Deal: How to Be a Master Closer in Everything You Do?
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That book isn't about actually making real connections or forming relationships though, it's about being a showman and putting on an act to increase your influence on people. It's literally a book on how to get people to do what you want while being the charming guy smiling at them. a lot of the tips in there would just come off so fake looking and scripted if you were to use them in real settings.

And it's not a bad book if that's what you want to gain from it. As far as an alternative I don't have any but I can give you a similar book called "The art of closing any deal" by James Pickens.

http://www.amazon.com/The-Art-Closing-Any-Deal/dp/044667785X

It's basically Glengarry Glenn Ross and HtWFaIP smashed together but without the sugarcoating and the feigning concern for things you don't really care about.