Affiliate Marketing Secrets

Over the past few months I’ve been confused as what I want to do as a career. I’m 18, recently left education and am currently unemployed. After a recent scare where my mum was emitted to an ICU, I think I’ve finally found my “niché” so-to-speak.
I honestly believe this is what I want to do. I spent every day in the ICU unit for 5 weeks, and learnt alot. I know it’s a stressful job and the 12-hour shifts are long, but I know I could do it.
My mum is finally home and I want to pursue this career path but I have no idea where to start as I don’t know what qualifications are required for this kind of position. Can anyone help me out? Thanks.