@Lyosha here it is
;; One of `vim', `emacs' or `hybrid'.
;; `hybrid' is like `vim' except that `insert state' is replaced by the
;; `hybrid state' with `emacs' key bindings. The value can also be a list
;; with `:variables' keyword (similar to layers). Check the editing styles
;; section of the documentation for details on available variables.
;; (default 'vim)
dotspacemacs-editing-style 'emacs
according to this I am already in emacs mode.
@ljgww_rb if so, I think it's time for some emacs tutorial or the book 😀 . some keys for starters - https://gist.github.com/robphoenix/9e4db767ab5c912fb558
about menu - https://github.com/syl20bnr/spacemacs/issues/5508
about last question - yes, i think