I've just finished Mistborn Era 1 and Elantris (unpopular opinion, but I liked that one a lot). This is the second time I've read them because I had forgotten almost all of it, as I read them for the first time almost four years ago.
I would like to know which book I should read next. I know it may sound like the same question every new guy asks once they get started in the Cosmere. The thing is, I already know (more or less) what "Secret History" is about. I don't know the details, but I know it's more deeply connected to the Cosmere.
I think I shouldn't read Mistborn Era 2 without getting into "The Stormlight Archive", or at least that is what I have been told a couple of times. But then