Cjo,
The one thing that really really stand out with PR is this ...
With regular reading utilizing the conscious mind ... you will remember the material but this quickly fades after about 48 hours and you loose even more comprehension after that.
Now with PR, since the material is now part of the subconscious and after using whatever activation techniques that appeal to you ... retention of the material is much more longer term. This is worth it's weight in gold!
Some if not many of the techniques are derived using brain friendly techniques, meaning the learning process is not only fun, relaxing but the material becomes a part of your knowledge base upon which you can build from.
Sometimes the most challenging way is the most rewarding way!
