[Openstreetmap] Downloading OSM data

[simon green]

Hi there. I'm interested in playing around with some visualizations of the
OSM data, in particular using programmable graphics hardware to do database
queries, different projections, colouring schemes etc.

How do I go about getting the data? I found the Wiki page about the REST api
and created an account, but I get "file not found" when I try to access urls
like the one below:
http://emailaddress:password@www.openstreetmap.org/api/0.1/map?bbox=51.47,-0.26,51.58,-0.03<http://emailaddress:password@www.openstreetmap.org/api/0.1/>

Is the data used in the printed London maps in the database? Is the track
data in time order?

Cheers,

Simon.
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