All the specifics are less significant than the big picture: Roger Stone ran a backchannel between the Trump campaign and Wikileaks, exchanging advance notice, requests for particular kinds of documents, suggestions to the campaign about messaging directions and more. Critically, this continued long after it became clear and widely assumed, if not proven, that Wikileaks was peddling out documents and emails that had been stolen by the Russian intelligence services.
Always worth repeating: this was all happening in plain view, making it obvious even in real time. All you had to do was follow along closely and it was there for you to see.
And of you don’t yet believe, remember that there are still dozens of shoes yet to drop.