One of the most surprising first-time flying tips is to use packing cubes. This seems an almost oxymoron because you are putting your stuff into more stuff, but once you use them you'll understand why they are invaluable for traveling!
An excellent way to keep yourself entertained during a flight is to download a selection of Netflix or Amazon Prime movies to your device. While some airlines offer free entertainment, not all do. Plan ahead and download before you get to the airport.