If you want a buyzone, do the following.

1. Create a box using the trigger texture where you want your buyzone to be.

2. Right click the box, and choose "Tie To Entity".
3. When the menu opens, on the left dropdown under the "Class" heading choose func_buyzone.

4. Once you have the func_buyzone added in the Class Dropdown, Look below it for the heading "Keyvalues"

5. Click on the "Team Number (int)" that is in the key values list.

6. Once you have Team Number (int) selected look on the right side and you will see another dropdown menu with a "0" in it. Drop down the menu, and pick what type of spawn you want it to be! Terrorist or Counter Terrorist.

Click Apply and your set.

Thanks that was great tutorial!
Can you do tutorial on how to make bomb placement and hostage follow ect...thats next thing i need to learn.thanks

Yes i'll surely do that :)

Foyleman can you add this as a tutorial?

done.