I found it to be a fine read, though your willingness to read plays will of course be an important factor in your personal enjoyment of it. It's somewhat long for a play, but a quick read, and naturally there's very little descriptions, just dialogs, so it's very quick going.
Without giving too much away, and hopefully without misremembering anything, it's essentially about the trials around some rather sinister, perhaps downright evil, adolescent women, and the older women that they have gotten under the suspicion of witchcraft. For me, what made the largest impression was how chilling and devious Abigail was.
That being said, it's my least favorite of the few Arthur Miller plays I've read.
And on that note, am I the only one who really enjoy reading plays, but have no interest in seeing them performed? There's something about the way they're usually performed that's really unappealing to me.