If you haven't watched it yet, do it now. Dub(funi) or Sub are both good. WATCH IT NAO.
I recommend this torrent, and bakabt for the stuff it doesn't have.
Order is: First Stage(26) -> Second Stage(13) -> Extra Stage -> Third Stage(movie) -> Fourth Stage -> Extra Stage 2; There are two battle stages which are summaries also.
I've given each stage a 10/10 so far.. watching the fourth stage now. It's just so addicting.. and it makes me want to learn how to drift.