Confused with Dropbox. Can you clarify some things about syncing, storage and accessing my account?

I want a simple solution to store and share data on the cloud across devices. Dropbox seems to have strayed from the concept of simplicity, so I just canceled. I have had Dropbox for years, and I've grown tired of it becoming less and less intuitive. Now, Dropbox is adding more "products" that should be part of a simple storage solution.  If anyone has advice for how to just have a solution to upload data, access it easily, and share it easily, I'm all ears.  Google hasn't seem to have figured it out either.  But, at least it's cheaper.  iCloud seems to be the easiest right now.