watch the you tube vids on basic flight and control 1st and foremost, there are no in game tutorials that actually tell you the control maps - they actually advise you to watch the vids. next do the in game tutorials basic flight + combat - hell, you're never too experienced to learn the basics. then get flying. i found a little grind to get some extra creds - you get 100k to play with as a starting gift but don't spank it all at once. After that, upgrade - be that ship or weapons just remember the sidewinder WILL get its handed to it from most bigger ships in play, especially if you're just starting out. A good starting ship upgrade is the Adder, good cargo space for building creds and, once you upgrade the shields, thrusters and main weapons that things actually a pretty good little run around, then see what feels right. I found smuggling to be more productive financially than trading - better £££ for each run. By that stage I'm sure you'll have started to figure which path you want your space destiny to take.
Happy Cruising Commander.
P.S. Xbone or PC?