There should be no difficulties with this port's installation, as there is only one file in project's archive, which is the game's executable. Download one of the port versions (one, which is compatible with your Wolfenstein 3D version: for example, I've used Wolfenstein Registered version executable, because I have a full version of the game) and unpack the archived executable to your game's directory (in my case this was 'e:\games\wolf3d\').
Start unpacked executable file ('wolfgl.exe') from the game's directory. The game will ask you to select screen resolution. Use the best one compatible with your monitor.
You can also press "Test" to ensure that everything is OK.
You will possibly also want to increase your in-game screen size. Click 'Change View' in main menu and use your cursor arrows to adjust screen size.
There is no music supported in this port. Although there are some slight rendering errors on my hardware, overall this port is good enough.
You can also visit official page for Linux-compatibleversions.