Making { Textures Invisible tutorial - Half-Life

[page=Introduction]
In this tutorial, you will be taught how to make the blue areas on textures e.g. fences, air-ducts and so on, and so fourth, invisible.

[page=Selecting your Textures and making the Brushes]
Start by Browsing through your Texture list, and select a texture with a "{" Symbol in front of the name (Like I Said earlier on, Airducts, Fences, gates etc etc.
Double click the texture you like, and make your brushes like said in Vash' Tutorial. I made this:

[page=Making the Blue areas Invisible]
Now you move on to making the blue areas Transparent. Start by Selecting all the Four walls (If it's eg. an airduct vent, just click the texture with the { symbol.
Click the Texture application Tool, , and click "Fit". This fit's your texture to it's whole area. To fix this, change it's X-Scale untill you are satisfied. Looks Booya, don't it ?
Now, move on to making the Blue areas Invisible. Select the Brush, and either Press CTRL+T or Right click it with the mouse (On the Wireframe Screens). Select these Options:

Dont touch the other options.

[page=conclusion]
See? It's not that difficult. Mapping IS easy. You just gotta know how to do it.
I can show you some more tutorials later; but I gotta shut down the computer right now.

-Good luck Mapping!