Ask HN: Where do sales people hangout? 6 years ago
In monthly, quarterly and annual review meetings ;)
On a serious note, Doing sales is more of establishing a relationship and then pushing the sale. All of these "how to make 100,000 by writing a book" types, they will just start with pushing the product and hence a very low or zero chance of sales.
If you are good with talks and building trust/ relationship, sales will happen eventually.