Key lessons from the second chapter of Friel and Byrn's Going Long.
The main theme seems perfect for a first time Ironman: consistency, moderation, and recovery. They claim (reasonably) that the biggest limiter for an athlete new lo Ironman is aerobic stamina, and addressing that limiter is the only thing to worry about during training. They rely on three key workouts—build to 4000m swim, 5 hour ride, and 150 minute run. The plan is to first work toward completing all three in the same month, then the same week, and finally over a single weekend. Furthermore, the main focus every week is getting to the key workouts fresh and injury-free. Anything or any workout that compromises that focus must be eliminated.
There are two things I like about this approach. First, it's refreshingly simple. Just three workouts a week to really worry about; everything else is extra. The approach is also unambiguous. If something gets in the way, drop it. No doubt I'll find some way to obsess over some minor hill repeats or track intervals, but when that happens, I now have an out. Stress elimination at its finest!