When I try to learn people something I think would be good for them, I often point out what I think is bad in their behavior and what I believe would be a good way of going something.

This doesn't seem to work well. It mainly seems to lover people's self-esteem. Which is a bad thing.

I'd like to become better at teaching people things I have learned. Is there any book that you know of that talks about teaching in a practical sense? Like how do I teach my friends stuff? And when should I not try?

If you're gonna criticise anything about someone's behaviour, be as positive as possible. Point out some positive stuff, go into what needs improvement and tell them how kickass things are gonna be if they can make those changes. Assure them that it's easy, and go back to talking about their positive stuff again.

For example, "You're an approach machine, it's fantastic! You don't have any AA whatsoever and you just go in with it, that's just the shit you need to be doing.... one thing I wanna point out though, and it's just a tiny adjustment, is that your body language wasn't as relaxed as it could be. You need to spread your attention out a bit more aswell cos you seemed to be focusing on the target more than everyone else. Apart from that, you're doing great! So next time just remember to relax as much as you can, as if they're guests in your home, try to use your hands more when you talk and look around at everyone when you're talking. I can't see anything else that needs changing, and that stuff is mad easy so you'll be able to fix it right away without really concentrating too hard. You're getting a lot more fluid with your transitioning aswell, which is great to see... keep it up and you'll be flying in no time."

Far better than "that was good but you need to relax more, and you were paying way too much attention to your target" - that kind of approach will make them feel like they're almost being reprimanded.

Haha, that's great Solomon!

Agrees with Solomon.

There are such things as:

Constructive Criticism
Direct Criticism
Indirect Criticism

Search these terms out on your favorite search engine.
You will get a lot of articles that will tell exactly how to
approach someone, and which one is best used on any
particular individual.

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