Hopefully this will save some frustration for new players.
1. Go to the training arena and get with a trainer. You don't want to know how to set up your guns when you get to a fight or where's my gear upon landing. Those may be unusual circumstances but you get my point. Trainers can tell you about using voice, trim, setting up guns, setting up views, how to set up your joystick, etc. These things are invaluable.
2. Read this forum. I believe you can get the times or setup a time for training. Further read the pinned threads.
3. Make sure you don't have too many processes running. You can see those using task manager. This will reduce resources need for smooth game play.
4. Get rid of any tool bars. I don't care how familiar you are with the name. Those are resource hogs.
5. You have to use an Antivirus, maybe not so much for this game but you can pick a virus up elsewhere. For instance, downloading new drivers. Find one that doesn't use too many resources. Further one virus will make the game almost unplayable. I can't recommend an Antivirus with any certainty but Windows 10 Defender seems okay. Some of the free ones overwhelm the system even if you turn them off.
6. Always be respectful no matter what the other players are saying. You will want to be in a squad at some point and squads like good behavior. Further it's a good reflection on your character.
7. You will get frustrated. Some folks have played for years and could even fly a brick very well. Don't get overwhelmed, take a break. Many old timers will often take a break when things don't go well. Then come back later.
8. Film your flights and fights. You can get a very good idea on what you could have done better.
9. Read the Technical and Hardware & Software forums. There is much good information there. Don't be afraid to post a question. Usually someone will answer right away. Normally another player and often an administrator.
10. Try all aspects of the game, vehicles, gunnery, bombing, dive bombing (JABO), and air combat.
11. Which plane to fly? So many schools of thought on this. Every plane is capable to a point and every plane has some weakness and some strength. Some say fly them all until you find the one you like. Others will tell you to pick one and learn it. Your decision. You will never know it all or all the different situations you can find yourself in.
12. Mostly have fun. It's truly an amazing game.