Congrats on your pump! I went on my pump (Animas Ping) about year and a half ago and I love it; my last A1C was 6.7 which was the lowest it has ever been in the 24 years I've had diabetes. My diabetes educator started me out conservatively which was helpful; she was also great about having me fax in blood sugars and letting me page her as much as I needed to as I adjusted...I think that's key. Get as much help as you need!
After a few months I found that I was comfortable narrowing in on targets and ratios and fine-tuning a bit; for example, I'm a runner and at first I didn't want to change anything but after awhile I became ok with reducing my basal before a run or not bolusing as much for the meal I ate before running or reducing my basal at night after a long afternoon run as I go low in the middle of the night as a result. There's no exact science to it and I'm ok with that; I think you have to give yourself space to experiment and not be afraid. It can be overwhelming to learn about all the ways you can adjust rates, targets, times, etc; again, get as much help as you need.
The most wonderful thing I learned is that it's ok to take the pump off for a bit; I can have it off for a few hours to swim, lay out, or after I exercise, and not see any climbs in blood sugar.
The other thing my educator told me that I appreciated was that if I didn't like it, it wasn't permanent. Fortunately I love it! Overall it's been much easier that I thought and just another thing I have/I do to take care of myself; does that make sense? While I certainly still have readings that are high, being on a pump has given me a better overall feeling of control and as though I am making better decisions about how to address high blood sugars.
I don't know that any of this is particularly helpful! What kind of pump are you getting?