I installed the text-editor "VIM" on my Ubuntu desktop 12.04 (running as a guest vm on a Win 7 host via VirtualBox). I used the command "sudo apt-get install vim", and the following "recommended additions" came up:

ctags vim-doc vim-scripts

I am still relatively new to Linux and am learning the basic commands, so I have little to no idea what these recommended additions are or if I should download them. I mostly downloaded VIM as a practice for the "apt-get" command.

Also, upon starting VIM up (sudo VIM), I can go into insert mode via pressing 'a' and escape insert mode via pressing 'esc', but beyond that, I don't know how to quit VIM (asides from forcing the terminal to close by manually x'ing out of it) or how to save changes I've made. For example, I have a word doc saved in /home/documents/VMtext.odt
Does it make sense to use the command sudo VIM /home/documents/VMtext.odt to edit the word doc through VIM, as opposed to just opening the word doc and editing it directly?