Here are some sites and links for lots of things to do and how to do them:
https://wccbi.org/whats-happening/outdoor-recreation/cycling/
https://pawilds.com/activity/biking/
https://www.fs.usda.gov/allegheny/
https://www.fs.usda.gov/recarea/allegheny/recarea/?recid=82073
https://visitanf.com/allegheny-reservoir/
https://www.dunhamssports.com/stores/1666-market-street-warren-pa-16365
Two wonderful places to get equipped and learn about the Allegheny River and Conewango Creek: