Info symbol lookup
While editing Elisp files, you can use C-h S (info-lookup-symbol) to look up Elisp symbols in the relevant Info manuals (see Info Lookup in The GNU Emacs Manual). To enable the same for Dash symbols, use the command dash-register-info-lookup. It can be called directly when needed, or automatically from your user-init-file. For example:
emacs-lisp
(with-eval-after-load 'info-look
(dash-register-info-lookup))