tangoGPS

Step 1 - Collect Data

When you arrive at a street which is not yet in OSM, switch to the "track" tab and simply press "Start". tangoGPS will now write a logfile that you can later use for extending OSM.
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The filename of the current logfile is then shown. If you come to a road crossing, you can easily split the logfile by pressing on "Split".
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Step 2 - Copy

Once back at home copy the logfiles from the Neo onto your desktop computer into a working directory, i.e. ~/josm_tracks
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Step 3 - Convert

Change into that directory and run the following command:

convert2osm.pl *log

This converts your logfiles into .osm files and at the same time cleans them from unnecessary points, i.e. when you are stopped at a traffic light.
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Step 4 - Load into JOSM

Now load the .osm files in JOSM
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The result will look like this:
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Step 5 - Edit & Upload

1. Select the way and make any necessary changes
2. Edit properties
3. Upload it to Openstreetmap

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Congratulations! In less than five minutes you have created a new way!

Your new way will show up in less than seven days on the maps of openstreetmap.org and you can be proud to participate in this great project.

Have fun!