If you have recently been diagnosed one big tip I can give you is -
Ask your doctor/s for a copy of your pathology results. You are entitled to a copy and it may just come in handy at a later date. Sometimes, doctors don't always explain to us all of the details, we can also forget what our doctors have told us. Your pathology results will give you such things as the type of cancer you have. This can help you down the track when you will have loads of questions and are learning what this all means for you.
Another tip is-
Put all of your appointments into a diary or in your phone. Once you start with treatment you will have appointments galore.