Be Careful of who you listen to!
I have worked in five different pool rooms in two different states, and still currently do so. I have taken lessons and given them. I have offered and sometimes even been asked for my opinion on the many dfferent aspects of this game.
It is an amazingly common occurance in a pool room. Unsolicited advice is EVERYWHERE! I think that MOST of the time it is an attempt of the "teacher" to showcase their "vast knowledge" of this game. More often than not if someone who you do not know goes out of thier way to offer their opinion or "help" they have something other than your improvement as their primary goal. And, yes, being female DOES increase this chance, though it is very common for guys as well.
I am a very opinionated person who is not shy about letting others know what I think about darn near anything. I also happen to love this game and helping others with theirs. I have, and probably will continue to offer more advice in the future. My motive is simple: I love this game and have a passion for it, and if I can share that passion with someone else, I welcome the opportunity. I also have learned over the years to try and not offer unsolicited advice to players, unless we have had discussions in the past, and they are open to it. I do struggle to keep my mouth shut at times( not always successfully).
I used to give lessons for free. I learned that even whe people approach you and ask for your help, they most often won't listen to it anyway. As soon as they find out that you do not know the magic words to make them a better player, and that work is required on their part, the interest fades. I tell them that while I truly love helping them with their game, they are the ones who need to make a commitment to it, not me. First, if they are paying, it shows it is important to them, second, I know I am not wasting my time on people who won't put any effort into it.
The absolute worst thing you can do (or have done to you) is to interrupt a lesson (formal or otherwise) to give your words of wisdom. This completely undermines the teacher and cofuses the student. Ask: Who does this help? Not the student, not the instructor, it only appeals to someone who wants to feed their own ego. Would you walk into a college class in progress with a teacher you have never met, and just blurt out any little tidbit of knowledge you may ( or may not) know with authority and expect everyone to be impressed? That teacher is instructing a complete course and new information is added to previous information in a logical progression to best be understood and retained by the student.
It doesn't hurt to be open to learning from as many sources as possible, but be VERY discriminating on who you listen to. Many well meaning people can lead you astray with misinformation. You have made a commitment to your coach, and he has made one to you. If you feel you have made a good choice in your coach, then let him guide you. Take what you may have heard from someone else and ask your coach what he thinks. Chances are he will let you know that he will be getting to that exact topic in a future lesson when he has brought you to the point where you will be most prepared to take full advantage of it. This is a much better approach than learning random tidbits here and there, in a random order, which may or may not be reliable info to begin with.
Could you imagine someone walking in and teaching advanced position play and strategy to a player who cannot consistantly pocket two balls in the first place? Even assuming that all the information is good, that player will not gain very much from it, because they are not ready. Actually it can do more harm than good, because their focus is taken away from their current lessons.
Sorry this is so long, but I have been on both sides of this many times, and still see it everyday.