So yesterday I tacked up the new gelding who is "green broke" and are going to take him out on a trail with other horses.He is great while i mount and get situated then the head tossing begins then backing up. I get off and start walking him just so he can see what the other horses are doing so we get out on the ride and i get back on. When I get back on he is fine no head tossing but he WILL NOT MOVE FORWARD!! he will back he turns to either side really nice too. So it dawns on me he is not educated at all. I call up the previous owners and they then say they only ever tacked him and sat on him bc they didnt know what to do from there. Great i did ride him home starting out being ponied by another horse then on my own but he was just following. How do you teach a youngster to nove forward and not backward? I have worked with young horses before and even trained my mare this fall to ride and now my daughter rides her but he is a big boy and i am confused about teaching him what i want. Any suggestions????