Are there any accessories that people would recommend me buying?
There are several threads that are around accessories, but I will chime in with my opinions.
1. Landing Pad - especially for taking off. You can land on cement, roads, but you're not supposed to take off from them. Keep the grass, dirt, rocks away from your drone.
2. Extra batteries (if you didn't get fly more bundle) 3 is the minimum I like to have ready
3. Legs - unless you are hand launching I recommend the small leg extensions.
4. U3 memory card
5. Tablet - I enjoy using a tablet rather than a phone.
6. Tablet holder - should be less than $20 unless you get a Thor (which are good)
7. Air specific case
8. Extra props
I'm sure I'm forgetting some things, but these are def. must haves for me
As far as advice:
Take it slow. The Air can do lots of cool stuff (though it can't do waypoints, which is BS)
Make sure you have acquired enough sats before you take off.
Don't feel the need to do stress testing (flight duration, distance away, etc.)
Keep in VLOS.
Be aware of your surroundings and try to do your first flights around nothing (open field)
Keep an eye on your drone. This sounds stupid, but with the phone/tablet feed I've seen too many people fly solely by that and have them crash because of it.
Be respectful
Have fun.
Since you're a photographer you will have the eye for framing, etc. That should be the least of your worries. Wade into the hobby.