Usually there should not be a fee. I guess it all depends on who helps you out. If they are looking to make money or just help a fellow flyer out. I have taught many people to fly before and never charged a fee. Just the fun of getting someone new in the air as pretty much rewarding in itself.

As for your wing dihedral I would just set it at the lowest setting. The eagle 2 is already a real forgiving plane as it is and still will perform well and still be stable at that setting. Usually people catch on fast when they started into flying and out grow their plane pretty fast. This way with the dihedral already set low you will have more fun with it. It will not to radical 3D aerobatics but it will do some basics.

As for your rudder it should be ok once you get it covered. The covering should keep it straight for you.

No as for the jig thing you mentioned not really to sure what you are talking about. Is it like a jig to make sure your tail is 90 degree with stab? or is it something else?