Aye, here's my tips (still a newbie myself, so others can feel free to correct me), of course the first thing you need to do is register your drone, after that, make sure you RTFM! here's my other tips:
1: Inspect the GPS board you have. If it's REV A, replace it! If it's REV B, I understand that's better, but you may still need to replace the GPS Shield for better accuracy. I went with this GPS myself :
mRo GPS u-Blox Neo-M8N / 3DR SOLO Upgrade and I'm pretty darn happy with it. Also got the Ver 2 GPS shield from 3DR.
2: Learn to land manually. I've had two flip overs on landings so far and luckily the drone wasn't damaged, landing manually is the way to go though.
3: Learn how to kill your engines immediately. (hold A&B and Pause). This is handy if you do have a flip over and the engines don't stop.
4: Assign one of your buttons (A or B) to fly manual mode. This is essential should your SOLO ever lose GPS signal, it will also help stop flyaway's. You can do this by enabling the "Advance" flight modes in the app, and then you can assign a shortcut button (without advance flight more options enabled, I think the defaults for A & B are Selfie and Orbit).
5: Learn how to use a program called "Solex" for android. It's not free, but compared to the 3DR flight app, it's actually a whole lot better and it's only improving.
6: I had problems getting video from my Gopro to the app, but If found that putting it into 1080P, 60 FPS and a Medium FOV cleared it up immediately, I was then able to adjust settings from the app later.
7: Buy extra props!
8: Flight times vary with wind conditions etc, it also depends on which batteries you use. I got some 3DR branded replacement batteries that appear to be chinese? I got them from Amazon, and while they do work, I'm not sure the performance is up there with the US branded 3DR batteries. So Number your batteries and rotate them as you use them (Solex actually can log your battery use for you).
9: Start slow! Get used to your drone and don't be in too much of a rush! The more used to it you get, the better a pilot you'll become.
10: Get some leg extenders! It will give the gimbal a little more clearance from the ground when taking off or landing.
11: Read the forums and use the search function. There's a whole host of solutions to questions that pop up and there's some great tips on here too. If you come up with any idea's or tips yourself, post them, there's newbies like myself who appreciate the great advice on here!
12: Have fun! Post some photo's or video of your flights. Let people know how you're getting on.