Dropping some notes here in preparation for the 300-101 ROUTE exam…

Configure route-maps:
router(config)# route-map {permit | deny} {seq-num}
Verify route-maps:
router# show route-map

Prefix-List/ACL – Permit Prefix-List/ACL – Deny
Route Map – Permit Router can learn about subnet Router cannot learn about subnet
Route Map – Deny Router cannot learn about subnet Router can learn about subnet

By default, the sequence numbering counts in increments of 10.  If you do not specify a sequence number, you risk potentially overwriting an existing sequence in the route map.