I have been reading through some of the books often recommended, and im sure they would help an average person with regular social skills, but I need something for people starting from square zero, as in for people who have never even had friends. Basically I need to start with something that tells me how not to be "that guy", and gain the ability to not be a social pariah before I even think about anything more, but I cant find anything.

Basically, I have spent my life as that guy no one talks to, who never talks, and when I left high school most people didnt know my name, and I didnt know any of theirs. How do I not be like this?