I started with probably the same booklet from probably the same magazine, but I also found a more complete reference making the rounds on local bulletin boards, so I was able to figure out input, and finally ordered the full language package from the author. Wouter van Oortmerssen is still working on nerdy pursuits, and created some other languages over the years, but none were as popular/successful as Amiga E. I made a small sample playback app with it, but my ambitions were far beyond my abilities.

I think it's primary reason for popularity was that it was so easy to use the Amiga GUI elements and other special features of the Amiga OS and hardware. I always had a hard time making stuff work in C, but could build a UI in no time in E.