For 1 and 2:

I think you need to qualify 'quality of life' a bit. Are you asking if the sequences will make you happier? Resolve some cognitive dissonance? Make you 'win' more (make better decisions)? Even with that sort of clarification, however, it seems difficult to say.

For me, I could say that I feel like I've cleared out some epistemological and ethical cobwebs (lingering bad or inconsistent ideas) by having read them. In any event, there are too many confounding variables, and this requires too much intepretation for me to feel comfortable assigning an estimate at this time.

For 3: I think I would need to know what it means to "train someone in rationality". Do you mean have them complete a course, or are we instituting a grand design in which every human being on Earth is trained like Brennan?