Here's a sneak peak of what the beginning of the game is going to be like

Unlike the DOS game, you will actually journey to the elevator where the level select will be (passing signs along the way that tell you the fundamentals regarding gameplay and what to expect.
Once you enter the building, you will approach the elevator and see the level select in the control panel. Then, the doors will close and a description of the level will be presented, and finally you will enter the level by pressing 'Enter'.
Also, in case you're wondering, I'm aware of the issue where it might be tricky to get past the top of the ramps, this will be fixed in the next revision.