I have recently started jumping with my horse. He's 6, but I'm in no rush, as he is from a slow maturing breed. As for now, it is just some simple jumps, usually about 50-60cm high and on seperate occasions we've tried jumping 80cm successfully. He has also been introduced to basic free jumping while lunging and at liberty. He has jumped a begginners' jumping course with his previous rider, too, before I bought him, but he has mostly been jumped with a rider. However, I would like to start teaching him to calculate his strides more seriously and to get accustomed to grids, and free jumping seems like a good start.
So, after all this introduction, I would appreciate to know any tips and tricks I should know, before I do this. Maybe there are good books on this topic I should read, your personal experience, anything at all. Of course, I will also ask this to our trainer, but I would love to get as much information on this as possible.