Good read this thread.
That puncture you experienced just shows you how things can go wrong without expecting it. On one of my PPL lessons we had engines problems after take-off, watching my instructor take over and handle the situation was a very good experience for me and one I won't forget. It's all good being told how, but when I saw him take over I feel I could handle it well if it ever happend to me.
I done my PPL over 6 weeks with a bunch of friends and it was the best time of my life. Enjoy the sleep!
After my skills test we were taxying back and the examiner said I passed. Not ashamed to admit I cried. It's such hard work and so rewarding.
Good luck.