it took me aaaaaages, well it felt like that anyway, bout two weeks i think. try bringing the front wheel up, then letting it drop with the back brake on, then release the brake and kick the pedals again to bring the front back up and grab the back brake again. basically kick hopping/wheelie hopping whatever you want to call it, but without the hop. this will help you get used to the motion of the bike, and controlling the kick and the brake. then you can start to add little hops aswell. hope that helped