Recently bought an Ipad with 4G and GPS capability. Down loaded the 30 day trial of ForeFlight. I am used to the AOPA flight planner. How do I get FF to plan a new VFR route via low airways and then save that for future use like I could with the AOPA program? It is going to take some learning time; I understand that, but it is a bit frustrating. Any advice will be much appreciated.