How do I proceed after setting up my online store?

Hello guys and girls,I paid someone £100 to set up my store and they put 100 random items on there,but now I am totally stuck and lost what to do next.

I think it’s already set up so I dont handle products or ship anything.

I have had dozens of random so called shopify partners messaging me bit do t trust,can someone please help??

What kind of help do you need?

I have been in nursing for over 20 years. I know nothing about just getting it up and selling anything camping