Question about transitioning between swimming and biking in a triathlon?

I’m not sure what kind of clothes I’m supposed to wear. I don’t think I can manage to run without a sports bra/just in a swimsuit. Should I just slip on my sports bra over my swim suit?

Need a good schedule for fitness training in the gym?

Well, I am planning on joining the gym for fitness, not body building, at least for now, because Im 22, and I trying to quit smoking. Im slim but im not fit at all, but I’m not sure what kind of schedule or plan I should base my "training" on. Thanks in advance.