Your first room continued...

Now it's time to put some textures on this bad boy.  Go Ahead and
deselect the box and have a look inside.  The blue and black images
are the default when a texture hasn't been selected yet.   Now let's
put something on the floor.  Go up to the textures option on the tool
bar and select base_floor.  Once the textures load you'll see them 
appear in the textures window.  Now select the floor brush in the 3D
window and once highlighted with red, move the mouse pointer to
the'clangdark' texture and press mouse1.   Now do the same with the 
walls.  Deslect the floor brush (esc) and one by one select each wall
brush by using (shift+mouse1) until they are all red.  Once again
go to your textures option and select base_wall.  Then select the blue
metal1b chrome texture and you'll see all four walls change.  This will
save you alot of time later on when your maps become more complex.

  

Lastly texture the ceiling or in this case, the sky.  Deselect the walls and now
select the ceiling brush.  Now your going to use your first shader with a sky
texture.  Using the textures option select skies and choose the  pj_dm1Osky
shader then deselect the ceiling.  You have just textured your first room.

  

Now it's time to check out your room but first we have to get you inside.  This 
is where entities come into play.  Entities include spawn points, weapons, items
like armor and health.  We need to have you spawn inside of the map using the
spawn entity.  Move the mouse pointer over onto the center of the square in
your wireframe window and right click on the mouse(mouse2).  A menu will 
pop up with a variety of options.  Select info and then info_player_start.  A cube
will appear in the wireframe window and you'll have to move it into place to see
it in the 3D window.  Ideally it should be against a wall just a few units above the 
floor.  Now you'll notice there's a big arrow sticking out of the side of the spawn
box.  This arrow shows which direction you'll appear inside of the map.  The
next section will show you how to keep from slamming into a wall.