Our group has moved from 4E D&D to Pathfinder and there is a notable step up in complexity. As DM I found this booklet immensely useful, both as a quick introduction to the most important rules before we played and as a go to reference during play. It cut down reference to the big rulebook to a minimum. It is well written and attractively and well laid out in colour. The one page per concept idea works very well in practice allowing you to rapidly find the information you're after. A really excellent product. Thank you.