The Cill Dara Historical Society site has a number of goodly bits on offer. An article on Brigit, a history of the area, a collection of old postcards, including the market square, the round tower, and the interior of the church. I do wish these were clickable to see larger images but alas, no.
Also included are a table of annals (plus bibliography), from 484 when Brigit founded the monastery to 1539 when the “Carmelite friary in Kildare (was) suppressed on 3 Apr. The friary was surrendered by the prior. It consisted of a church, belfry, dormitory hall and two chambers. Kildare also owned a messuage, a garden and a close containing one acre, as well as a cottage and six acres of arable land in the vicinity.”
The site is hosted by Kildare.ie--the County Kildare Community Network--with everything from community events, forum, and business directory to an A-Z of County Kildare Websites. Check it out before you visit!