My guess (and it's been many a year since I was a new user, so I could be wrong) is that users want to do one of four things to get started
1) Tell people stuff (so this is journal entries; and access and getting-started and crossposting and tags and joining communities would all be a subset of that)
2) Find things to read, so subscribing and finding communities and the reading page and the latest things feed
3) Talk to people, so all about comments, comment tracking/notifications, and again about communities and how to join them/find them
4) Make their journal look the way they want
I would leave out info on site schemes, on viewing things in one's own style, the navigation bar, anything that isn't directly related to the four things above.
no subject
1) Tell people stuff (so this is journal entries; and access and getting-started and crossposting and tags and joining communities would all be a subset of that)
2) Find things to read, so subscribing and finding communities and the reading page and the latest things feed
3) Talk to people, so all about comments, comment tracking/notifications, and again about communities and how to join them/find them
4) Make their journal look the way they want
I would leave out info on site schemes, on viewing things in one's own style, the navigation bar, anything that isn't directly related to the four things above.