running map

Hello, new to the forums and source mapping in general. Sorry if this has been answered before, I couldn't find it. So, when testing your maps do you start TF2 every time or do you keep it running in the background and update the map? If the latter, what is a convinient way to do it?

I have my map like its empty on the tracks and the one side is open but when i quickly run the map is does not empty the tracks.

so I am new to hammer and I created a simple box in hammer. So then I go to run the map but then it said that the file specified could not be found. I'll show you it here ** Executing... ** Command: Copy File ** Parameters: "C:\Program Files (x86)\Steam\steamapps\common\Team Fortress...