I have whenever I play this loud squeaking sound or a unsteady note and I don't know what to do about it... I know someting is wrong with my mouth pistion but everything else is fine anyone can help me.

You have to give more information, does it always squeak etc...could be reed, mouthpiece, or saxophone at this point, help us break it down for you.

CJ

all the stuff is fine execpt for my mouth posture, I am not quite sure how to do it EXACTLY I can do every 5 notes

I mean I don't know how to put my mouth exactly right

A teacher would be best at this point, but if that's not an option, just get as many books as you can and check out all the sites out there. Here's a site I found helpful when I started out.

http://www.saxlessons.com

You might find something on there to help your problem. I just started 3 weeks ago and haven't played it for a week because of region. I still squeak occasionally going from a higher note to a lower one, but that gets better over time. You just have to experiment with your embouchure and see what it takes not to squeak. Good luck!

Also look at Larry Teal's "The Art of Playing Saxophone", great for any saxophonist at any level.

CJ