If your ear can understand the notes, and know valve positions, you can do the scale and notes above and below that octave. I took band 5th grade to 9th on t-bone. 10th I played at athletics... 11th and 12th, rented a baritone. Funny, D in 4th position on the t-bone had the same valves (1 and 3 down, I THINK!!) as did G, 3 notes higher. 3rd position of the t-bone slide matched valve 1and 2 down. So I think you can learn notes and a lot more if you stay off the stupid computer! It is a time eater. DO-RE-MI is "middle" C, D, and E (which was usually E flat in the key signature) if the tenor corresponds to a piano. Seems on the bass clef, things are weirded out. DO was B flat.... Since you know the basics like 4/4 time cut time, key signatures, etc you should make some progress.