Your first steps with JOSM – the Java OpenStreetMap editor by Ramya Ragupathy.
From the post:
OpenStreetMap’s web-based iD editor is the easiest and most convenient way to get started mapping. But there may come a time when you need more power – our mapping team uses the Java OpenStreetMap (JOSM) editor every day. JOSM allows you to map fast with keyboard shortcuts, a series of editing tools for common tasks and specialized plugins. Here is your guide to take your mapping skills to the next level.
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I had to grin when I saw the advice:
Connect a two-button mouse to your computer to make working with JOSM easier.
At present I have an IBM trackpad keyboard, a Kensington Expert Mouse (roller ball) and a two-button scrolling mouse, all connected to the same box.
JOSM is probably too much for me to master for a mapping/planning disruption project I have underway but it is high on my next to master list.
Of course, you should avoid updating a public map with your planned disruption points, unless even with notice your disruption cannot be prevented.
Enjoy!