A strafe-jumping lesson from Hero

I'm probably not the only one that gets utterly frustrated by the maps that populate the XDF servers, since you can finish most of them only with mage-like strafe jumping skills. What is the map's name that you used for the tutorial, I'd like to have a long, wide and straight corridor without (!) pits pillars bumps edges spikes lava to run into, just for practicing strafe jumping. I still can't do it very well, and there's unfortunately really a few maps only where I can concentrate on strafe jumping.