Fantastic that you want to get out there, but breaking and schooling horses needs an experienced horseman/woman. The horse needs to be taught the same way children are. They need gentle consistant tuitition and reasurance. Im sure you wouldnt send children to just any old school where they are taught wrongly where bad maners and discipline are not enforced. the same is with the horse.
Im not saying that you would knowingly instill any such behaviour but in inexperienced hands (even well meaning hands) bad habbits are so easy to form and so much more difficult to get rid of. My advice keep up with the riding lessons and let someone much more experienced do the breaking, then when both you and the horse are more experienced you can both reap the rewards together
