You're welcome. If a video store is going to carry any anime I'm guessing they'll carry the first volume at least. And if thats the case, you'll know which episodes you are watching and won't have to worry about watching something before its time and possibily spoiling something for yourself. I'll bet they also have the movies, but I wouldn't rent those until you've seen the series, since the movies are the ending of the series.
Lastly, this series is considered an action/drama, but judging from actual content I'd say its more of a drama then action series, even though there are some really intense action scenes (especially in the movies).
So if you aren't one for drama you may not like this series. The first few episodes may bore you. But if you give it a chance the series does get better.