His best recommendation is at the top: don't configure a lot of settings and plugins at first. Start with a minimal setup, and slowly work up from there when needed. In particular, don't copy someone's huge .vimrc.
In fact, that's good advice for any tool or technology: start minimal, and only add what you need, when you know you need it.
To his minimal initial configuration, I would suggest one addition: set a colorscheme that looks good to you in the terminal/gui environment you normally use, and choose from the default schemes rather than downloading a pack of them. I like elflord (it doesn't use a lot of red, which is hard to read on a black background), YMwillcertainlyV.
To see which scheme you're currently using, open an existing file in your favorite language and then:
:colorscheme
To cycle through the available schemes: :colorscheme<space><tab>
Each tab will show you the next scheme's name; hit enter to try one.