You're not going to watch everything and immediately apply it all perfectly. It will come from one or two things sticking out, you applying them, feeling weird at first but gaining insight. Coming back and watching over the info with that new insight and experience. You only know what you know and so the more different experiences you expose your brain too and put yourself in the more different insights and reference experiences your going to have to have to take away new knowledge.

Going over what could have happened in your childhood to lead to a lack in social ability and increase in stress and triggers. May of these things go over looked without any mindfulness to the issues and continues to past down generation over generation without notice .

This is where every actions of yours is coming from. The only thing that separates the physical tangible results that you want starts here:

Talking to new people can be difficult especially when you have haven't done it before or always back down when you do. This gives you a reliable set of things you can say and have a good conversations with so you an practice first without getting stuck on the words and making no progress at all.

You need to understand what makes someone creepy vs attractive when speaking to another person

Talking about the physique the face dressing and personality. Breaking down what is it to be attractive at a primal monkey level and what's authenticity, confidence and competence.

If you find someone you like and want to move into a longer term relationship and maybe even marriage then their are going to be some things ahead of time you should know how to handle so when these situations inevitably do come up you're prepared with the best tools to actually turn potential arguments into moments of closer bonding.