Yay for you switching to bass clarinet! bass clarinets are amazingly awesome!
Yes, the fingerings are the same as soprano ("Bb", a term which annoys me as used to identify the standard soprano, but I digress) clarinet, with the exception of the very lowest note(s), which don't exist on soprano. Eb is that extra right hand pinky key at the bottom. The very top (above C above the staff) is slightly different, but you probably won't be playing up there anytime soon- it rarely is needed in most band music, I mostly only use it in scales or when I'm playing stuff written for soprano.
The primary difference in playing bass clarinet is it takes A LOT of air, and the embouchure is slightly different. I often find myself loosening to hit notes that would need an extremely tight mouth on soprano. Play around a little, you'll figure it out. It's not that difficult a transition, usually. Some people find they can't play bass, and some bass players can't play soprano(my friend who sits second chair is one) but generally it's not too hard to switch.
You may have difficulties playing quite as fast on bass, because the keywork is so much longer it tends to move a little slower, but you will get used to it and it will get easier with practice.
On a side note... oompa's will soon become the bane of your existance, and marches will drive you crazy. But have fun!
if you want any music or music suggestions,(or have any pressing bass-related questions) drop me a message via my profile, i'd be glad to help!
