Can you delete some of the older ones to create new ones? or do you just open another EZA account and start from basic? Or of course sign up to platinium. I have just entered into basic plus and I am wondering
Don't worry about this before it happens. You will learn and know what to do next. And then choose which one works better.
You can ask for an account upgrade, you'll see a link to do that after submitting all available articles.