1. That wouldn't be necessary since the prerequisites are on the school's website. The prereqs are usually 2 semesters of nursing chemistry or general chemistry, 2 semesters of Anatomy & Physiology, Microbiology, Psychology classes, Stats, etc. Some colleges require Biology and Medical Terminology
2. For the nursing prereqs itself, it will take me 3 semesters (this semester I'll will complete my last 2 prereqs), but I guess it depends on the person. One semester i thought it would be a good idea to take Gen Chem II with lab, Stats, Intro to Psyc, and A&P I with lab all at the same time. That was a pretty stressful workload for me, but I still managed to get A's and B's thank goodness... I suggest you take an amount of classes per semester that is comfortable for you because entry into nursing school is extremely competitive and you want to make the highest grades you can. At my school you don't have to finish the prereqs before you apply for nursing school, but you do have to finish them before you start nursing.
3. Yes, depending on where you go. For and ADN program, I believe it's about 2 years total and for a BSN program, its about 2-3 years for core requirements/prereqs and about 5 semesters for the actual nursing program.