First of all, Merry Christmas and congrats on scoring the new Typhoon! You're gonna love it.
I'm not much further along than you are, but I've been searching for Typhoon H info like a madman for many weeks, and still am, so I have a pretty keen idea of what you need to know and where to find it before you take your first flight. Before I start, let me say this to you: you may not want to wait to fly until you purchase this, but I would highly recommend the Yuneec UAV Pilot simulator, for around forty bucks, to gain some flight experience before you actually fly your new Typhoon. I practiced with the H flying, landing, maneuvering, etc., for a couple of weeks before I actually took off. Personally, I think the simulator should come with the H because it's time well spent learning the handling of the Typhoon H. But you probably don't want to go that route. You probably want to fly, and understandably so. So here I go:
DO NOT take your first flight until you have totally digested every word in every manual Yuneec offers, in the box and online. Don't just read them, UNDERSTAND them fully. Literally, one small mistake and a crash is definitely in your future, either caused directly by you or by your unfamiliarity with the onboard equipment and systems operations. Sometimes this craft will move on its own accord - on the ground or in the air - as it's designed to do (especially in concert with the ST16 controller powered on) but in ways in which you are not prepared for it to behave or have even thought out. So, know how the systems work before you ever power up so your H will fly ONLY where you want it to. (BTW that's the only secret to avoiding a crash: just always fly safe and always fly ONLY where YOU want your aircraft to be. It's that simple.)
DO NOT take your first flight until you have seen and digested MANY of the numerous videos posted on YouTube and elsewhere across the Internet about the Typhoon H. Watch enough of them until you get sick, then watch those again and next find some new ones to watch. Trust me, those vids contain a whole lot of little kernels of first-hand, practical knowledge about this drone, its components, and how they all work together that fill in the many gaps present in the Yuneec owner's manual. Yes, Yuneec wants you to believe that the H is something you can just unbox, set up as shown in a few online diagrams, and be competently flying in a matter of minutes. THAT is just a marketing ploy to help move units. In reality, nothing could be further from the truth. You do have a lot to learn before being airborne and there are no safe short cuts to getting that knowledge. Why would anybody think that it would be easy learning to fly something that is GPS guided, attains speeds approaching 50 MPH, operates both by remote control and independently, and can fly well beyond the line of sight while still maintaining signals and video feed to a handheld controller? By nature it's a very complicated piece of machinery and therefore it must be approached as such.
Luckily, others have travelled this road ahead of us and have left a video trail we can follow and learn from. Treat those videos like the library books of Alexandria. Bookmark the ones that are of particular interest to you (on setup demos, flying tips, Typhoon H basics, whatever) so you can play them on demand and really learn what is being shown. If you do this much, you will be as informed as possible and ready to move on to the next step.
The moment will come when you feel ready and you know it's time to take the Typhoon up. When it does, PICK A VERY, VERY OPEN AND VERY, VERY WIDE UNOCCUPIED SPACE ON A CALM DAY FOR YOUR FIRST FLIGHT! That means no trees whatsoever in the immediate area, no buildings, no people, no power lines, no nothing. Follow all the Yuneec instructions included for battery loading, etc. Keep your ST16 controller about 30 feet away from the drone and power it on, antennae out. Walk back to your Typhoon 30 feet away. Make sure the nose of the Typhoon points at least 20 feet toward empty space, (i.e., nothing in front of the sonar sensors within 20 feet) in case you happen to switch on Object Avoidance, which you SHOULD NOT DO yet!! Power on the drone until it emits a distinct tune then return to your controller.
Stand 30 feet BEHIND your drone. You should now be looking at the large rear light. ON YOUR ST16 MAKE SURE the landing gear switch is down. Make sure the Pan mode camera switch is flipped up to "F" so that the camera is aimed in the same forward direction that you will be flying and are facing. Make sure that you are switched into Angle Flight Mode only NOT IN SMART MODE!! NEVER TAKE OFF IN SMART MODE DESPITE WHAT YOUR BRAIN MAY TELL YOU IT SHOULD DO!! SMART MODE IS DEDICATED SOLELY TO PRE-PROGRAMMED CAMERA/TYPHOON H MANEUVERS THAT ALLOW THE H TO MOVE ABOUT ON ITS OWN!! ALWAYS TAKE OFF IN ANGLE MODE!! Also, make sure you have rotated the speed control to 'Turtle.' You're not ready for 'Rabbit' mode yet.
In Smart Mode the Typhoon can and will react to the ST16 controller's placement and proximity to the aircraft, so it may suddenly surge forward, backward, etc., without warning. Smart Mode does a whole lot of cool and unique things, but each item must be entered into with thought beforehand to avoid undesired effects with the aircraft. Therefore, ALWAYS take-off in ANGLE MODE (center switch position) and then move into Smart Mode as the situations call for it and as you learn. THE SAME HOLDS TRUE FOR LANDING!! For example, while you can hit the Return To Home switch for the aircraft to return to you, you should switch RTH off and select ANGLE MODE when the aircraft is close enough for you to take over control of it. IN ANGLE MODE YOU RETAIN CONTROL OVER THE TYPHOON. IN SMART MODE THE TYPHOON IS INDEPENDENT/CODEPENDENT AND MUST REMAIN A CERTAIN DISTANCE AWAY FROM THE ST16 CONTROLLER, so it may suddenly fly away from it and perhaps run into any number of obstacles strictly by design and through no fault of its own.
Once in Angle mode, press the red start up button on the left side of the ST16 to start up the 6 props. Once the rotors are engaged, slowly raise the left stick and raise the aircraft off the ground about 10 feet (distance is indicated on the ST16). Let the drone hover there. Raise the landing gear. Raise the craft 5 feet higher. Let it hover some more. Now move the left stick left and right to rotate the craft clockwise and counterclockwise. When it is facing away from you, you see the large taillight and two red light rotors; facing you, you see the 2 sonar sensors and 2 white light rotors. Face the craft away from you again and lower it 5 feet again. Now use the right stick and move it to the right and watch the Typhoon move to the right with you. Stop. Now try left. Come back to your starting point. Practice these basic maneuvers until you get a feel for the controls and for how the Typhoon responds, and until you are able to set the drone in space where you want to. When you feel ready, the sky is yours, just DO NOT OVERDO IT!!! Your first flight is not the time to go for altitude or distance records. Keep it reeled in a bit. You're not going to learn it all in one day, so don't even try. Remember, power without control is not only not good, it's also dangerous.
Once you're up in the air, play around some. Try switching the Pan mode to "G" Global and turn the Pan control knob with your eyes on the display. Try everything you have seen or read online, in a manual, or seen in a Typhoon H video. However, be mindful of your battery level. Time will fly as you fly. Either be time-conscious or set a timer on your phone for 17-18 minutes to remind you to return the bird to the ground BEFORE you start getting warnings. This is your first flight, the experience is intoxicating, and you may be tempted to push the time element, but don't. Get it back safely on the ground in time. Try to be mindful of exactly how the craft is situated in 3D space as you fly and even hover. If you are in Smart Mode, the craft will always correspond to your movements on the ST16, despite which direction the nose of the craft is pointing, making flight much easier. Be aware that switching on Return To Home first RAISES (or LOWERS) the Typhoon to a little more than 30 feet above the ground before flying to home, so be very aware of the environment before you switch on this auto feature.
When you're ready, either switch on RTH or pilot the bird yourself to your clear, pre-selected landing site. If you used RTH, switch back to Angle Mode long before it is within 30 feet of the controller and LAND IT YOURSELF. Once on the ground, first power down the drone and remove the battery to cool, then power down the ST16. Finally, lean back and laugh.
That's about what I can offer you as a starter. Hope it helps. Overlook nothing, ignore no detail, never guess, and use the equipment as it was designed to be used. Do that and all should be well.
Here's wishing you the best on your maiden flight. By all means look elsewhere for advice, too. Most of the folks in these forums are friendly and freely offer their advice and support. Good luck and good flying!