route-planning: links to websites

Author: practicalli-johnny

docs/route-planning.md

@@ -8,14 +8,25 @@ Cycle computers are common now and routes can be created and shared easily, via
 
 Common sites for creating and sharing routes include:
 
-- Ride With GPS
+- [Ride With GPS](https://ridewithgps.com/) to view, edit & create new routes.
 - Kommut
+- [Climb Finder](https://climbfinder.com/) to find significant ascents to include in your route planning
+
+
+!!! TIP "RideWithGPS App useful for viewing routes"
+    A subscription to RideWithGPS is required if you wish to save route edits or any other action other than viewing a route.
 
 
 ## Ride With GPS
 
 The [Ride With GPS website](https://ridewithgps.com) can be used to create any number of routes with a free account (TODO: check if there is actually a limit).
 
+Use the "Route Planner" tool on the website to create a route from scratch, or open an existing ride or route for editing.
+
+??? TIP "Editing Complex or circular routes"
+    It can be simpler to create a new route rather than edit a route which has parts that traverses the same roads in different directions.
+    Open the original route and new route in separate side-by-side browser windows and create the new route from scratch, using the original route as a visual guide.
+
 ### From a cycle ride
 
 Sharing a ride captured on a cycle computer or other GPS tracking device is a simple way to capture a route.