Create an images directory under www, change the group to webgroup (or whatever it is) and grant group write.

mkdir /path/to/www/images
chgrp webgroup /path/to/www/images
chmod g+w /path/to/www/images
[download]

If you want to put the images directory somewhere else then you need to put an alias directive in http.conf.

Alias /images/ /home/you/images/
[download]

Then apache will look in /home/you/images for URLs like http://www.linuxnoobphilip.org/images/philip.jpg.

It sounds like you need to do a bit of reading to get going. Linux distributions typically have documentation installed and that is a good place to start. All you need to know about apache is at Appache home page but I grant it is a bit daunting.