回答:
試してみる
(setq help-window-select t)
または、この変数をカスタマイズします。完全なドキュメントの状態:
Documentation:
Non-nil means select help window for viewing.
Choices are:
 never (nil) Select help window only if there is no other window
             on its frame.
 other       Select help window unless the selected window is the
             only other window on the help window's frame.
 always (t)  Always select the help window.
This option has effect if and only if the help window was created
by `with-help-window'
You can customize this variable.
This variable was introduced, or its default value was changed, in
version 23.1 of Emacs.
              
*Help*バッファに移動できます。