Help with camera settings please.

I know this has probably been asked countless times before, but…..

I have just invested in a Nikon DSLR and a 55-300mm f/4.5-5.6 zoom lens.
Not exactly top of the range, but I was on a tight budget 🙂

Trying to eliminate too much trial and error, I would like a rough idea of what setting to start on, in taking
pictures of aircraft with a bright sky behind them ? ISO for example. Also what is the maximum speed to avoid static
props.

Thanks