doc: add clarifications to Linode cookbook recipe

* doc/guix-cookbook.texi: clarify Linode recipe

Reword paragraph about adding the Guix device disk to Debian config.
Improve example commands for sftp-ing files to the server.
Minor wording fixes

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

doc/guix-cookbook.texi

@@ -2050,10 +2050,12 @@ Copy into it the output of:
 cat ~/.ssh/<username>_rsa.pub
 @end example
 
-Power the Linode down. In the Linode's Disks/Configurations tab, resize
-the Debian disk to be smaller. 30 GB is recommended.
+Power the Linode down.
+
+In the Linode's Storage tab, resize the Debian disk to be smaller.
+30 GB free space is recommended.  Then click "Add a disk", and fill
+out the form with the following:
 
-In the Linode settings, "Add a disk", with the following:
 @itemize @bullet
 @item
 Label: "Guix"
@@ -2065,9 +2067,9 @@ Filesystem: ext4
 Set it to the remaining size
 @end itemize
 
-On the "configuration" field that comes with the default image, press
-"..." and select "Edit", then on that menu add to @file{/dev/sdc} the "Guix"
-label.
+In the Configurations tab, press "Edit" on the default Debian profile.
+Under "Block Device Assignment" click "Add a Device". It should be
+@file{/dev/sdc} and you can select the "Guix" disk. Save Changes.
 
 Now "Add a Configuration", with the following:
 @itemize @bullet
@@ -2093,8 +2095,8 @@ Root device: @file{/dev/sda}
 Turn off all the filesystem/boot helpers
 @end itemize
 
-Now power it back up, picking the Debian configuration.  Once it's
-booted up, ssh in your server via @code{ssh
+Now power it back up, booting with the Debian configuration.  Once it's
+running, ssh to your server via @code{ssh
 root@@@var{<your-server-IP-here>}}. (You can find your server IP address in
 your Linode Summary section.) Now you can run the "install guix from
 @pxref{Binary Installation,,, guix, GNU Guix}" steps:
@@ -2183,19 +2185,20 @@ Replace the following fields in the above configuration:
 @end lisp
 
 The last line in the above example lets you log into the server as root
-and set the initial root password.  After you have done this, you may
+and set the initial root password (see the note at the end of this
+recipe about root login).  After you have done this, you may
 delete that line from your configuration and reconfigure to prevent root
 login.
 
-Save your ssh public key (eg: @file{~/.ssh/id_rsa.pub}) as
-@file{@var{<your-username-here>}_rsa.pub} and your
+Copy your ssh public key (eg: @file{~/.ssh/id_rsa.pub}) as
+@file{@var{<your-username-here>}_rsa.pub} and put
 @file{guix-config.scm} in the same directory.  In a new terminal run
 these commands.
 
 @example
 sftp root@@<remote server ip address>
-put /home/<username>/ssh/id_rsa.pub .
-put /path/to/linode/guix-config.scm .
+put /path/to/files/<username>_rsa.pub .
+put /path/to/files/guix-config.scm .
 @end example
 
 In your first terminal, mount the guix drive:
@@ -2205,9 +2208,9 @@ mkdir /mnt/guix
 mount /dev/sdc /mnt/guix
 @end example
 
-Due to the way we set things up above, we do not install GRUB
-completely.  Instead we install only our grub configuration file.  So we
-need to copy over some of the other GRUB stuff that is already there:
+Due to the way we set up the bootloader section of the guix-config.scm,
+only the grub configuration file will be installed.  So, we need to copy
+over some of the other GRUB stuff already installed on the Debian system:
 
 @example
 mkdir -p /mnt/guix/boot/grub
@@ -2260,7 +2263,7 @@ still need to set your root and user password initially by clicking on
 the ``Launch Console'' option in your linode.  Choose the ``Glish''
 instead of ``Weblish''.  Now you should be able to ssh into the machine.
 
-Horray!  At this point you can shut down the server, delete the
+Hooray!  At this point you can shut down the server, delete the
 Debian disk, and resize the Guix to the rest of the size.
 Congratulations!