Make sure you can listen and comply with ATC instructions first. If you are not comfortable listening at what sometimes may be a faster speed, practice.
Then:
Listen
Comply
Flying in B is great, lower VFR weather requirements, you get steered around the area. Just make sure that radio and transponder is working, and you are listening to it. If it means moving the mic up on the headset of your passenger, so they won't bother you during your B time, then do that til you get used to things.