I can't say where these things were learned from because they weren't directly taught, and seemed for the most part common sense. I would guess its a broader result of my upbringing.

I wouldn't ask a woman out more than once if she declined. Not only to obviously respect somebodies boundaries, but also because I think its degrading to continuously pursue somebody who has expressed that they don't have an interest.

In terms of what language is acceptable, it depends on the context of the relationship. If we don't have a sexual relationship, then I wouldn't use sexual language with a woman. If we do, then we both are using that type of language, and the specific of the language depends who I'm with and what they're into.

Consent would be multifaceted. I think for a big part its pretty clear through somebodies actions and body language if they are consenting to sexual activity, like mutual touching that escalates. If I'm getting signals that the woman I'm with is interested but I'm not sure, then I'll ask if she's okay with my hand on her leg or something, which has happened before. For sex specifically, I'll generally tell the person I'm with to not be afraid to let me know what they like and don't like, or if something feels good or doesn't, etc.