Pure "cold calling" isn't the only way (but I've been there too) predictablerevenue.com/book changed the course of my first company by helping us fail faster. We built some internal tools to support the 'Cold Calling 2.0' process he lays out in the book and when we realized our product wasn't sellable, we pivoted our company around the tools we built.
6 months in, we're doing more revenue each month than we did all of last year.
I was going to say, the other source I find really good at the moment is http://saastr.com/, but I now see they are the same author. Thanks for linking - I'll check that book out. I'll be the 1st to admit I need all the help I can get to teach myself to be good at sales.
6 months in, we're doing more revenue each month than we did all of last year.