In reply to hokkyokusei:
https://mountainviews.ie/summit/14/
You should find all the info you need there (but I’m on the Mountainviews committee so I would say that!). Osi sheet 74 is plenty good enough for a map.
Easiest way up is the Black Road from the south... easy and gentle track the majority of the way. Rounds from the north are better though...the Galtees are a bit more dramatic from that side.