A touring plan is a plan of which park(s) and which attractions/activities you will do, and when. It can be very general, or very detailed. Some people have no touring plan at all, and completely "go with the flow". This can be very enjoyable, so there is nothing wrong with it. However, if there are certain attractions that are a priority for your group, you will need at least a basic plan to be sure you are able to do those things. Most have at least a basic plan of which park they will be in and which attraction to head to first. Also, most plan which attractions to use Fast Pass Plus for. If you have Dining reservations, you will need to plan around them- so that may be a place to start planning.