I need some guidance about saxophone from an expert please.?

I'm not a saxophone player, but I am working on my masters in flute performance, and am fairly familiar with the saxophone world. If you're just starting, it's easier to go with something you can find on ebay than if you happen to be an advanced student or a professional. The problem that I've run into with my own students, however, is that the beginning instrument makes ALL the difference in the world. It's so much easier to get frustrated playing on an instrument with, for instance, leaky pads or a mechanism that is adjusted badly than it is with an instrument in good repair, set up by professionals. This is why I would recommend going to an instrument dealer who specializes in your instrument (if possible), and make sure that your first saxophone is a solid instrument that is properly adjusted! I hope this helps... I wish someone had given me this advice years ago!

Maybe you should start with clarinet and switch to the sax. Also, buy it at a music store and not at Costco or where you can't examine it. The mouthpiece should be good quality (Clark Forbes "Debut") and you need reeds (Vandoren or Rico Royal).