No offense to anyone, however I feel that natural ability has a lot to do with it. I've seen both young and old struglgle or succed.

In the case of tri-cycle gear planes, if your field is not paved or has very smooth short grass, the planes have a hard time moving through the grass. Unless you put 3" tires and enjoy bending the nose gear back into positon, then stick with tri-cycle trainer. Also, a lot of people move the main gear forward and slap a tail wheel on a trainer and learn to fly just fine. Your going to fix an airplane a lot as a beginner, so just expectit. Get a good instructor, which is hard, and fly as often as you can. Flying once a week or less, is just going to slow down the learning curve.