Hi I'm interested in going, but this would be my first time with a serious group. I looked over the pinned posts in the new riders forum; is there anything else I should know first or bring? Thanks
As long as you can ride at a consistent pace for 1.5 hrs you will be fine.
Bring enough water, it's summer time.
as Iggy said.... water, water and water.
maybe a snack if you think you might need it.
and if you're not sure about which group to go in, just hang out with the "chill-paced" group. i'm usually one of the sweeps on that one.