Go to Sore Heel parking lot. Hike trail going SE that crosses river. Pass several trails that cut to the right until you see that wall (which generally faces north) is facing east. More moderate climbs will be to climbers left.
Mountain Project's determination of some of the classic, most popular, highest rated routes for The Shire:
Note that the instructions in the guidebook to this crag are confusing at best, and there is a problem with the topo. The key is to follow the right fork in the trail at the big boulder after the road changes to a foot path. And realize that route number 1, "My Name is Earl", 5.11c, is about 30 feet uphill on a corner from where it's marked, and the topo numbers, at least for routes 1-6 should be numbered 2-7.
The guide book offers a good description of how to find this area. Once parked in the Sore Heel area take the trail at the end of the parking lot that goes across the stream. Stay on the trail until it breaks to a foot path. There will be a 'fin shaped boulder' on the left at a fork in the trail. Veer right. Then take the first small trail on your left hand side. The trail hits the wall right in the middle. You have 2 5.10's right in front of you. There is a project and a 5.10d to the right. The rest of the climbs are to the left.
If you take the left side of the trail when you hit the wall and walk past the first face you hit the North 40 wall.
The trail was redone as part of the Trails Day since I was there in May. There was a bunch of work done to block climber trails, make the main branch more obvious, plus the trail nicely switch backs, which should limit erosion. The path leads in towards the base of the wall below the rockhouse.