hey Claire and WELCOME
My advice to you is to go to your local college and get all the requirements and information on their nursing program. Speak with an advisor at the college also. An Associates Degree is a two year nursing program, Bachelors is 4yrs. There are prereq's normally that you would have to complete, but you would find that out when you go speak with someone.
Qualifications to become a nurse....THE DESIRE, COMPASSION, AND HEART to care for the ill and their families. What we do may not always be glorious, but we make a difference in people's lives which is gratifying.
Getting to your goal may take awhile, but if it is what you really want it will be worth it.
The first step, get the info from the college, speak with the advisor, and APPLY