I am CCNA cisco certified R/S, I got 1000/1000 in my CCNA exam, I am currently studing for my CCNP route exam, well I have a lot of good material that could really help you to pass the exam, I am a studing electronic engineering at URBE ( an great university in Venezuela). Next week I´ll be on vacation so I´ll have some time to help you on vacation I think we can schedule some time, you tell me what is not easy for you and I can make some good practices in packet tracer for you.