docs: polish "First Steps"

also in README's Usage section

1 files changed, 7 insertions, 6 deletions

diff --git a/README.md b/README.md
index 49f2ca31..3fc4bf80 100644
--- a/README.md
+++ b/README.md
@@ -40,15 +40,16 @@ See [here][features], most notably:
 
 Usage
 =====
-In all views, arrows, page-up/down, `j`,`k` and `Space` can be used to move the focus.
+The arrow keys, `page-up/down`, `j`, `k` and `Space` can be used to move the focus.
 `Escape` cancels prompts and `Enter` selects. Hit `:` at any time and type in commands
 to the prompt.
-The current *mode* is displayed at the bottom left, after the buffer number;
-This can be 'search', 'thread', 'envelope' etc. In different modes different commands are
-available.
-Usage information on any command can be listed by typing `help YOURCOMMAND` to the prompt;
-The key bindings for the current mode are listed upon pressing `?`.
 
+The interface shows one buffer at a time, you can use `tab` and `Shift-Tab` to switch
+between them, close the current buffer with `d` and list them all with `;`.
+
+The buffer type or *mode* (displayed at the bottom left) determines which prompt commands
+are available. Usage information on any command can be listed by typing `help YOURCOMMAND`
+to the prompt; The key bindings for the current mode are listed upon pressing `?`.
 
 [notmuch]: http://notmuchmail.org/
 [urwid]: http://excess.org/urwid/