>>1
Start by putting stuff in your
~/.emacs file. It's just a Lisp script that gets executed on startup. Some moderately useful options:
(global-set-key "\C-m" 'newline-and-indent)
(global-set-key "\C-j" 'newline)
This swaps the default behavior of enter and Ctrl+J, since the latter auto indents in every language but the former
never indents. There are Emacs purists who scoff at me for this but it's one less thing to think about when getting the hang of it, so fuck them. (I also rebind Ctrl+W and Ctrl+U to their Unix/readline counterparts, but that's probably weird.)
There are zillions of Emacs modes for doing things with parentheses. The good ones are on the wiki (
http://www.emacswiki.org/emacs/CategoryParentheses) so just go there and read about them. ParEdit is the most useful but also the most Lisp-centric. Show-paren-mode is built in and you can turn it on with a line in your
~/.emacs file:
(show-paren-mode 1)
Getting colors to work right depends on your Emacs version and the terminal you use (if you use one). Personally I find urxvt superior to the awful Gnome terminal, but you might be a masochist, or you might want proportional fonts in Emacs for some incredibly stupid reason. Poke around on the wiki.
Once you do get colors set up, remember that nobody can tell you what color theme to use. Pick up Solarized (google it) or just ask around for
load-theme packages if you have Emacs 24.