Remember Ralphy, Playing C on that thing isn't C, it is a transposing instrument (just as no one has mentioned it yet). Tonguing notes will come with practice, I personally never had trouble with it. Sax overall I did not find terribly difficult in the 4 years I played. Got to do In The Mood the one time, breaking the octave (you are playing above and below on the main line) was the challenge there. It has a lot to do with air pressure applied (you can do it without the key too, but that is more work).