hard to play the trombone??

i have played alot of instruments and none of them have been really hard…the clarinet, all saxophones, guitar, violin, flute, xylophone and i can play lots of things on the phone…lol but for the last 2 weeks of skool we have 1 class that we go to all day that we learn something new…i got the band one and were gonna have to learn a new instrument, and my primary instrument now is the tenor sax, and were not allowed to play in the same section (woodwind, brass, percussion) and i want to play trombone…is it complicated to play/learn…answers are appreciated! 🙂