For #2, you can callfirst you'll want to add a couple of keybindings to your init file (org-store-linkthese are the suggested keys in the Org manual) -
(global-set-key (kbd "C-c l") 'org-store-link)
(global-set-key (kbd "C-c C-l") 'org-insert-link)
then you can hit C-c l
somewhere in or on the item you want to link to, then (org-insert-link)C-c C-l
where you want to place the link - it'll. It'll ask you to confirm the location and then enter a link descriptionname - you can just hit enter to accept the defaults. It createswill create a link like [[file:foo.org::*bar][link-name]], which displays as link-name
.
To make it easier, you can bind these to C-c l
and C-c C-l
with the following in your init file:
(global-set-key (kbd "C-c l") 'org-store-link)
(global-set-key (kbd "C-c C-l") 'org-insert-link)
These are the suggested keys - seeSee http://orgmode.org/manual/Handling-links.html for more details.