Hammer How-To #1: Basic Everything

A tutorial aimed at making Hammer your friend, and not your enemy!
Visit all of these links for things you have to know and try:

Official Valve Developer Community tutorial: https://developer.valvesoftware.com/w...
Brushes: https://developer.valvesoftware.com/w...
Entities: https://developer.valvesoftware.com/w...

When you click Run Map, you can use these useful commands in "Additional Parameters":
-dev -toconsole -console +sv_lan 1

I used a func_door brush-entity. Doors tutorial by 3kliksphilip:    • Source SDK Tutorial Doors  

Want to learn all the useful keyboard shortcuts? Give my tutorial a visit:
   • Hammer: Useful Keyboard Shortcuts  
Like the map in my desktop wallpaper? You can download it at http://bit.ly/ExeterLibrarySource
Wallpapers: http://bit.ly/KahnSource01 http://bit.ly/KahnSource02 http://bit.ly/KahnSource03
**** Notes ****
For the "Z" mouselook toggle to work, your mouse must be in the 3D viewport area when you press Z. When Hammer starts up make sure that the 3D camera view is set to "Shaded Textured Polygons" (Click "camera" in the top left). If you want to centre the four viewports so that each takes up a quarter of the screen, use Ctrl+A anywhere. Make sure you follow the annotation at the beginning - do not use the "Source SDK" launch window anymore, as it is obsolete. Run Hammer.exe or Hammer.bat from Steam/steamapps/common/game name/bin