colours

hi,
im abit of a noob at blender as ive only had it for 2 hours, but im having problems with the colours. when i apply the colour it colours the whole mesh. i need to no if there is a way to only colour certain parts of the mesh withou changing the rest. if there is any tutorials let me no as well.

Well come
here is a tutorial on that
http://www.linuxgraphic.org/section3d/blender/pages/didacticiels/blender_material/tp2-index-ang.html :smiley: