There is also Silver Lake home brewing in Providence/Johnston line. I went there and it's an interesting little place. They have the best price for a brewbelt I've seen. 22.99.
There's also brew horizons in Warwick. That's the LHBS that got me started. They don't have the most things, but still some things. I just see that in RI, the two biggest LHBS are in the way south(craft brews), or the way north (blackstone) so I just wanted to toss some more in the middle.