Take the park shuttle to stop 6 at The Grotto, cross the road and bridge, then follow the West Rim Trail to Scout Lookout. On the climb to Scout Lookout, you gain about 1,000 feet over 2.25 miles; the chain section comes after that. The full outing takes at least half a day. Water is available at The Grotto, but there is no drinking water along the trail. Restrooms are at The Grotto and Scout Lookout.
An Angels Landing permit is required beyond Scout Lookout; you can reach the lookout without one. Keep the confirmation downloaded or printed because cell service can be unreliable at ranger checks.