Here are a few links to YouTube videos on how to play the saxophone:
Opening the case & naming the parts
How to use cork grease
Introduction to reeds
How to assemble the mouthpiece, reed, neck
How to put sax together
How to hold the saxophone
Help! My note doesn't sound right!
How to play B
How to play A
How to play G
Alto Sax beginner song Hot Cross Buns