The "ugliest" exercise I know comes from John Glasel for reducing pressure. Play, say a g in the staff and reduce the pressure until it sounds bad. Using that pressure do whatever it takes to make it sound "better."
This builds the ring muscles quite nicely.
Don't forget Clifford Blackburn and Tony Scodwell.
I lobbied for TM to send its Moderators to Hawaii for a week or two. No response then, nor now.
Many low impact repetitions help grow our endurance. Clarke Studies are our friend.
A Bb trumpet has longer valve slides than a C trumpet, because it is lower.
The 3 valves lower the pitch of the trumpet by one whole tone, one halftone, and a tone and a half respectively.
When we press down the first valve, we change from a trumpet in Bb to one in Ab. When we add the third valve it is too short. That is why we have that finger ring on most third valve slides, to help us compensate for low D and C#.
Welcome to TB!
Making friends here shouldn't be a problem. Learning new stuff about trumpet? Uhh, you'll make some friends here. 
Did you hear about the music director that survived a lightning strike?
He was a poor conductor.
Have a B6 with an ancient Monette leadpipe, a ring on the first valve slide, and Curry lightweight finger buttons and I like it a lot. My E3 is "meh."
Helped pay for college playing in a horn band. Heck, even Steely Dan was using horns back in the day!
Wow! Two Committees? You must be a super good jazz musician!
I would suggest (wildly, at that) that the advertisements be placed in a column to the right.
