Every link is to a section based on focusing on the 20% of the most important things, which will produce 80% of the results or more for less than 20% of the efforts of non-focused doing.
Some people may elect to become an 80/20 Hybrid (using many but not all 80/20 processes) or to become an 80/20 Selective (picking and choosing at what first strikes one as important). Those are all fine, and many of you will gradually move into the whole program, as life will be easier and fuller and more satisfying.