[GRASSLIST:5978] a little help for a new user?

[Matt Hoek]

Hello all,

I just downloaded the spearfish data set from 
http://grass.baylor.edu/sampledata/spearfish_grass5data.tar.gz, and I 
have a few questions.  When I start up GRASS (on Mac OS X), I'm asked 
for my location, mapset, and database.  I understand GRASS will always 
ask me for this information, but I don't understand how to complete 
these fields.

So, if I unzip the download and create the directory 
/home/grass/spearfish, would it make sense to choose:

LOCATION: spearfish
MAPSET:   ??? <not sure what goes here>
DATABASE: /home/grass/spearfish

Does it even make sense to create this directory?  I guess I'm just 
confused on how to organize myself as I use new data sets.  I 
appreciate any help or suggestions that are out there.  Thanks a lot!

M